How to keep up with the pace of change in the modern industrial environment.

You are probably aware that we are in the middle of the fourth industrial revolution.

The fourth industrial revolution is characterised by a fusion of technologies that is blurring the line between cyber-physical systems

The first three industrial revolutions transformed and revolutionised our society  and with each stage our world has fundamentally changed around us.Technological evolution speeds up exponentially as each generation of technology improves on the last.As change becomes more rapid it is becoming increasingly important to be aware of this when installing infrastructure such as factories.

There are some key areas where GAP Engineering can help improve your ability to keep pace.

CAD design 

Sliding Trolley

CAD models play a crucial role in the planning and implementation of modern factory installations.It is becoming more common for the interior of entire buildings to be scanned with a 3D scanner in order for a complete CAD model of the entire workplace to be created. every detail such as flow of work ,positioning of safety fencing ,height restrictions and positioning of equipment can be thoroughly analysed before any other steps are taken.

All of out accessories are available for download in several CAD formats and we provide a CAD design service.

To access our CAD files please complete this   Confidentiality agreement  so that we can send you the CAD files you need.

For a copy of our latest catalogue please follow this link Alusic catalogue  

If you would like to talk to us about a project please follow this link  GAP Engineering  


Rapid prototyping 

How to keep up with the pace of change in the modern industrial environment. - aluminium extrusion


The more things change the more they stay the same and as long as there is a requirement to convert ideas into physical functioning machines there will always be a requirement to build prototypes.As the rate of change increases you would expect the pace of prototyping to increase correspondingly.

This is where products such as T Slot extruded aluminium profiles play a vital role in allowing for the construction of workable prototypes that can easily be modified .Furthermore the components can be recycled for other prototypes without any cutting or welding of metal.We carry over 60 varieties of T Slot profile in stock as well as a large range of accessories.


Adaptable cost effective machine frames. 

How to keep up with the pace of change in the modern industrial environment. - aluminium extrusionHow to keep up with the pace of change in the modern industrial environment. - aluminium extrusion









Because it can be modified without the use of metal cutting, grinding,welding or painting The Alusic T Slot aluminium extrusion system can save a lot of money when there is a requirement for modifications and improvements to machine frames.Because it is usually more cost effective to use this system for the initial construction it really is the best solution available. It is very easy to add additional components or frame work members with minimal impact.


Steel engineering machine

Aluminium Profile conveyor system

How to keep up with the pace of change in the modern industrial environment. - aluminium extrusionHow to keep up with the pace of change in the modern industrial environment. - aluminium extrusion







Using T Slot Aluminium Profiles and accessories enables the smooth integration of many different components such as conveyors , workstations ,lighting,compressed air,electrical components and much more.When it is time to make some improvements it is easy to make modifications and add components.



Safety fence

The components that make up the framework we supply  match the safety fencing components so they can integrate perfectly and any modifications required can be carried out with minimal impact to the rest of the factory.

T Slot Aluminium Extrusions and accessories

GAP Engineering T Slot Aluminium Extrusions and accessories


Profilium T slot Aluminium Extrusions and accessories are used in the following applications.

  • Machinery Frames
  • Industrial work stations
  • Clean room work stations
  • Trade Show Displays
  • Conveyors
  • Clean Rooms / High Altitude Rooms
  • Display Units
  • 3D Scanning Frames
  • Linear Guides and Actuators
  • Machine Guards and Enclosures
  • Safety Fencing
  • Racing Simulators
  • Trolleys
  • Racks and Cabinets
  • Air Tables
  • Laboratory Jigs and Frames
  • CNC router beds and frames
  • Industrial Jigs
  • Robot Heads
  • Audio Visual Supports/ Frames
  • Special Purpose Vehicle frames
  • Automotive tie downs and roof racks
  • Light Boxes
  • Vision System frames
  • Camera stands
  • Automation Sensor Brackets
  • Solar panel stands/ supports

How to get the most out of your profile.

When you are spending your time and money on a project you need to be sure that you are getting the most out of your resources.


T Slot Aluminium framework

Unintentional wastage can end up costing you a lot and you need to plan carefully to avoid blowing your budget.









aluminium profile extrusions

The last thing you want to see at the end of a job is a big pile of costly material that some how wasn’t quiet long enough to be useful but ended up being a lot of material none the less.







How to get the most out of your profile. - aluminium extrusion

Profilium T slot Aluminium profile extrusions

When you have a large cutting list and the profile you are cutting comes in 6 meter lengths it can become very complicated to work out how to minimise your off cuts.









Fortunately there are a number of free and open source resources available  such as this   Cut list optimiser   which are suitable for bars of material.

most of them will allow you to print a copy of your cut list or you can download this  Cutting list form  to help you make a list of the cuts that you need to do.


machining T slot aluminium profile

T Slot saw












Our bars come in 6040mm lengths to make allowance for width of the saw blade when cutting .Remember to include the saw blade thickness on the optimiser when doing the set up.Most saw blades are  3 mm thick so you can make up to 13 cuts and still have a full 6 m of usable material

Don’t forget that once you have a cut list you can send it to us and we can cut it accurately for you and deliver it to you .In fact cutting the profile before delivery dramatically reduces the freight cost .We can also drill and tap the profiles for you if you require.

For more information on how to join our profiles please see these resources

aluminium profile standard connection

How to create a strong join in Aluminium T Slot extrusion


T Slot Aluminium Extrusions and accessories

GAP Engineering T Slot Aluminium Extrusions and accessories


Safety around machinery

When it comes to the health and safety of workers there are no compromises or short cuts.Often there will be a situation where you will need to re-evaluate your safety fencing and possibly make some adjustments.

Alusic Aluminium T slot frame work makes it very easy and cost effective to make important improvements .

In this example it was decided during a safety audit that the fence surrounding this machine was to low after it was relocated closer to some moving equipment in order to free up space.

machine guarding and safety fencing

The end posts where easily exchanged for longer posts and a rail fitted along the top of the existing fence

Aluminium safety fencing machine guarding

Using the clamping plate accessory intermediate posts where installed above the existing posts

4040 T slot clamping plates extrusion accessories

50 x 50 x 3 square galvanised mesh was cut to size and fitted into the T Slot frame.

4040 T Slot Aluminium Extrusions


This exercise was carried out in 4 hours with minimal impact . The cost was low and there was no hot work required on site. There was also no requirement for surface treatment such as painting . Most importantly the goal of creating a safe working environment was easily achieved.Some of the T Slot extrusion from the original posts was cut and used to make the intermediate posts further reducing the cost and demonstrating how versatile and cost effective it is to use T Slot Aluminium Extrusions and accessories for these types of projects.


T Slot Aluminium Extrusions and accessories

GAP Engineering T Slot Aluminium Extrusions and accessories












Conveyor systems

T Slot Aluminium Profile conveyor systems Conveyor systems - aluminium extrusion

Conveyor systems - aluminium extrusion



Conveyor systems - aluminium extrusion

When you require a conveyor system you need to consider a lot more than just the conveyor system itself.

These are some of the factors you may need to take into consideration

  • How you are going to integrate a conveyor system into your current infrastructure
  • How can ensure that it is safe to operate
  • How can you minimise disruption to your production while it is installed.
  • How easily can you make modifications to it.



Our extensive range of T slot extrusions and Accessories will help you to overcome these and many other challenges.

Because our products are so versatile and adaptable you will be able to design and construct your conveyor system and any associated equipment such as work stations or guarding out of the same easily integrated components

We can supply you with the CAD files you need to help you design your conveyor system or if you don’t have the design capability we can design a system for you.

We can supply the components you need and assist you in getting your system constructed in the best methods.

The Alusic range of conveyor belts is divided into eight broad groups:

– Series 20: belt conveyor with 20 mm roller for 18.5 mm profiles
– Series 30: belt conveyor with 30 mm roller for 356.001.028 and 356.001.032 profiles
– Series 1000: belt conveyor with 50 mm rubberised roller for 356.001.032 profile
– Series 50: belt conveyor with 50 mm roller for 45 mm profiles
– Series 95: belt conveyor with 95 mm roller for 90 mm profiles
– Series 2000: tab chain conveyor, fixed width of 82.5 – 114.3 – 190.5 – 254.0 – 304.8 mm
– Series 3000: modular chain conveyor, fixed width of 152 – 250 mm
– Pallet series: conveyor belt for 112.101.001 profile

with the series 50 and 95 being the most popular

T Slot Aluminium conveyor system

Inclined Conveyor

You can access resources such as CAD files , parts catalogues and guides on how to use these products here  Aluminium Profile Resources





30 Series Extruded Aluminium T-slot Profile

30 Series Extruded Aluminium T-slot Profile - aluminium extrusion


The Profilium 30 Series range of Extruded Aluminium T Slot profile consists of 18 different profiles in both 6 mm  and 8 mm slot sizes

We carry a large range of accessories to match these extrusions

 Visit our On line store and check out our extensive range of products


Aluminium T Slot extrusion

13 x 30 Extruded Aluminium T slot Profile

30 Series Extruded Aluminium T-slot Profile - aluminium extrusion




These profiles are extremely versatile can be used for a number of different projects. Our case studies have shown using T slot profiles to manufacture can dramatically reduces costs due to rapid assembly times and  and the fact that there is nor finishing such as painting required afterwards .In addition there is no hot work such as welding required and there is also no distortion due to weld contraction.



30 Series Extruded Aluminium T-slot Profile - aluminium extrusion

Aluminium T Slot Extrusion

60 x 60 Extruded Aluminium T Slot Profile


Because the assembly process required to build framework with these Profiles is so simple, it is easy to relocate components if required.It is also a easy to prepare a cut list and transport a large assemble as a flat pack to its final destination for assembly. this can result in a large saving in transportation costs and also allow for large structures to be assembled inside areas with limited access.





for resources on how to use our extrusions effectively go to this link How to do a Standard T slot connection




45 series T slot Aluminium profile

40 x 40 Extruded aluminium T slot profile with threaded core

Alusic T Slot Aluminium Profile

The Alusic 45 Series Extruded Aluminium T Slot Series.

This series of profile is our most versatile range with 48 different profiles ranging in size from 18 mm to 180 mm .With the large number of options available  they are suitable for the food  and packaging industries as well as many other industries.They also provide excellent strength and rigidity for applications that require a higher load bearing capacity.

This profile has a proven track record of providing excellent value for money in industrial applications and providing our customers with reliable solutions. We wont have enough space here to tell all of the different applications we have seen and we are fairly confident that there are many more that we haven’t thought of yet.


18.5 x 32 Aluminium T slot extruded profile

084 101 003

90 x 180 T slot extruded aluminium profile

084 101 026


There are a number of different construction methods for building with T slot extrusions

These profiles are connected with M 8 screws , nuts are available in M 4 ,M 5, M 6, and M 8 options for fixing to the extrusions.

If you want to find out  How to create a strong join in Aluminium T slot extrusions click on the link.

Massive Range of Accessories

We have many accessories such as fixing plates,articulated joints,linear joints and corner brackets which can be purchased at our On Line Store


Profilium T Track Extrude Profiles and Accessories

T Slot Profile and Accessories

Extruded T slot aluminium profiles and accessories

Extruded T slot aluminium profiles and accessories

Alusic Aluminium Profile Accessories

Massive Range of Accessories in Stock

See for yourself how it works

If you would like to see you these products can help you achieve your project goals and learn how to use them feel free to visit Our Workshop during working hours.

We will also be showcasing our products at The 2019 AUSPACK Packaging and Processing expo so if you are in Melbourne in March 2019  feel free to come and say hello.


GAP Logo with Web Address


The 45 Series profiles are suitable for the following types of projects

  • Conveyor systems
  • Machine guarding
  • CNC Machines
  • Machine frames
  • Custom made work benches
  • Custom made work trolleys
  • Clean rooms
  • Trade show display stands
  • Robotic prototyping
  • Table saw guides
  • Automated fabric cutters
  • CNC route beds


45 series T slot Aluminium Extrusion

084 101 012 – 45 x 45 regular T Slot Aluminium Extrusion

18.5 x 180 extruded aluminium profile

084 101 007 – 18.5 x 180 T Slot Aluminium Extrusion

45 x 45 slim T Slot Extruded Profile

084 101 042 Slim 45 x 45 Profile











45 series T slot Aluminium profile - aluminium extrusion



Why are t slot aluminium extrusion profiles so popular?

T slot aluminium extrusion profiles are popular for a variety of reasons. Mainly their popularity is due to the fact that they are lightweight and durable, and because they are basically modular components, that provide effective solutions for a variety of applications.

Compared to steel fabrication, a t slot aluminum extrusion profile doesn’t need to be welded, ground, primed or painted, saving both time and money in its manufacture. The practicality of a t slot profile makes them suitable for many manufacturing processes, including assembly, linear motion systems and automation.

Structural aluminium framing using a t slot profile has achieved great success and is regularly used in machine bases, laser enclosures, work stations, noise containment enclosures, and machine guard safety enclosures. Aerospace, medical device manufacturers and the electric vehicle industry, all make use of t slot aluminium extrusion profiles in their assembly and manufacturing processes.

Some of the benefits of t slot aluminum extrusion vs steel include:

  • An equivalent steel structure takes longer to engineer and assemble than aluminium.
  • Steel requires ongoing maintenance, because it’s prone to rust and corrosion, so it needs to be inspected and painted regularly to maintain its integrity.
  • Steel needs to be welded and ground whilst aluminium doesn’t.
  • Design changes can be made on the fly with t slot aluminium extrusion profiles, whilst steel takes much more time to modify, meaning less delays and fewer missed deadlines.
  • Structural aluminium can be engineered much more precisely than steel with near perfect measurements, easily meeting compliance standards quickly and easily.

The need for low cost producers in a competitive market is vital for the Australian economy. So it is good to know that the need for modular custom and off-the-shelf t slot aluminum extrusion profiles continues to grow, as more and more industries realise the benefits of using this lightweight and cost-effective material for their engineering applications.

A t slot profile made from aluminium is ideal for complex processes with multiple modular components, being cheaper and faster to produce, assemble and test than steel equivalents. The bottom line is that t slot aluminium extrusion profiles are just as strong as steel, whilst being faster to engineer and assemble, and cheaper and easier to maintain.

For more information on using t slot aluminum extrusion profiles for your applications, call us on 07 3823 1079 or send us an email.

T-Slot extruded aluminium profile joints – sliding clamp

Profile Joints – Part 6

Sliding clamp

In this, our sixth in a series of posts on aluminium profile joints, we talk about a sliding clamp. Although not strictly an Alusic product or a joint type, it is something we developed to use with the Alusic range of extruded aluminium profiles.

Imagine that you have machine frame constructed using aluminium extrusion, and you need a stop for some part of the machine’s function. Now imagine that you need to move that stop on a semi regular basis (eg: a number of times a day). It would be nice to be able to just grab a handle, release the stop, slide it to a new position, and clamp the stop in place. No need to go looking for a spanner or a hex key to undo clamping bolts, etc. etc..

Well, we have just the thing. At least we think we do. You’re free to decide for yourself.

sliding clamp

Sliding clamp

The concept works with any t-slot extruded aluminium profile. In this example we are using an M8x45* lobed knob (1077.36), an M8x25 rectangular nut (084.302.011), a length of 3 slot 40×40 extruded profile (084.102.005), and a piece of 50x50x5 square hollow section.

The crux of the concept though, is the lobed knob and the rectangular nut in the t-slot.  The rectangular nut readily slides in the t-slot of the profile until the knob thread is tightened. Even hand tightening the knob provides enough grip to very effectively clamp the slider in place.

sliding clamp

Lobed knob and rectangular nut


sliding clamp

Sliding clamp assembly


Slider options

The slider component need not be a hollow section like we’ve used in this example. The hollow section is ideal if your application calls for something like a telescoping arm or leg.  The slider could just as easily be a piece of angle as shown below.


sliding clamp

Optional use of angle as slider


One example of an ideal use case for a sliding clamp is as a movable stop on our Portable Saw Bench.  If you already have a saw bench, retro-fitting a sliding stop could be as simple as bolting a length of t-slot profile to your bench.  For example, 18.5×32 (084.101.003) has a single 8mm slot perfect for a rectangular nut.



T-Slot extruded aluminium profile joints – sliding clamp - aluminium extrusionT-Slot extruded aluminium profile joints – sliding clamp - aluminium extrusion


If you want a copy of the Alusic catalogue to view on your own PC, go to our site main page, fill in your name and email address and click the Send button. We will then send you an email with a download link for the PDF file.



T-Slot extruded aluminium profile joints – pawl clamp

Profile Joints – Part 5

Pawl clamp

In this post the focus is on the pawl clamping connector fastener, or ‘pawl clamp’ for short.  This is the fifth in our series of posts on aluminium profile joints.

pawl clamp

Pawl clamping connecting fastener

A joint constructed using a pawl clamp can have the relocatable advantage of a fixing plate, but via a single fixing screw rather than two. This means less stuffing about on those occasions when a joint needs to be moved.

Information about different styles of pawl clamp can be found on pages 2.53 to 2.56 of the Alusic catalogue.


The Alusic catalogue shows a pawl clamp for almost any joint type your application might require. The basic pawl clamp can be used in place of the standard connection to make a simple square joint, whether T or corner.

There are also pawl clamps that can be used to join profile pieces end-to-end, at an angle or straight, as shown in the diagram below.  This type of joint is stronger than the simpler linear joint or angular joint.  As a result, it can be used to construct a joint that can carry a bigger load, in tension, than a linear joint.

pawl clamp

Preparing the joint

Preparing the joint simply involves machining a hole of the correct diameter and depth in the first of the profiles to be joined. Exact dimensions for the holes to suit each pawl clamp are shown in the Alusic catalogue. The number of holes is determined by the number of pawl clamps the joint needs (2 in this example).

pawl clamp

Ready for assembly

pawl clamp

Joint partly assembled
















Assembling the joint

We can use two pawl clamps to join an 18.5×90 (084.101.006) to almost any profile with an 8mm t-slot. In this example we show it joined to an 18.5×32 (084.101.003), a 1 slot 40×40 (084.102.006), and a 6 slot 45×90 (084.101.019).

Start by putting the pawl(s) into the hole(s) machined in the first of the profiles to be joined.

The joint is completed simply by sliding the pawl clamp square nuts into the t-slot of the second of the profiles to be joined. When the required joint location is reached, simply use a hex key to tighten the fixing screws in place.

pawl clamp

18.5×90 joined to 18.5×32

pawl clamp

18.5×90 joined to 40×40

pawl clamp

18.5×90 joined to 45×90










So there you have it.  The pawl clamp; used to construct strong joints in extruded aluminium profiles, can be adapted to a variety of different joining requirements. The pawl clamp is so adaptable that it could readily be used in applications outside the realm of aluminium extrusions.  Use your imagination, almost any joint requirement can be fulfilled using pawl clamps.

If you want a copy of the Alusic catalogue to peruse on your PC, go to our site main page.  There is a place where you can enter your email address and click the Send button. We will then send you an email with a download link for the PDF file.


T-Slot extruded aluminium profile joints – Linear joints

Profile Joints – Part 3

Linear joint.

This is the third in our series of posts on aluminium profile joints.  In this one we focus on the linear joint.

A few months ago, we had a customer who was building a display stand to use at various trade shows around the country. The interesting things about this stand were a) the finished height needed to be changeable, b) it needed to be quickly and easily assembled and dismantled, and, c) it needed to be readily packed up for transport to and from venues.

Complying with c) was easy. Extruded aluminium profiles are readily amenable to being stacked and tied down to a pallet for easy handling and transport.

To make the thing quickly and easily assembled and dismantled (requirement b), we decided to use clamping plates for most of the joints. See this blog entry for more information about using clamping plates.

The reason for the changeable height was that some of the venues for these trade shows don’t have the ceiling clearance for their particular rather tall display stand. So we decided to make the top section in two parts. One of which could be left out of the assembly when ceiling height decreed.

Now, there are a number of methods to join aluminium profiles end to end. On this occasion though, the customer wanted to maintain the clean neat lines of the aluminium extrusion.  As a result, we elected to use linear joints in this case.

The linear joint is ideal when the joint is under a compressive axial load, as was the case here.  This joint type is not recommended for high bending load applications such as the middle of a long span beam.

T-Slot extruded aluminium profile joints – Linear joints - aluminium extrusion

As you can see in the diagram above, the joint piece(s) fit neatly inside the t-slot in the extrusion and there are no parts extending beyond the perimeter of the profile.  This diagram shows a 90mm version in the slot 8 series 40 x 40 profile.  The number of linear joint pieces used in any given joint is limited by the number of t-slots in the extrusions being joined.  The number actually used depends more on the strength and rigidity of the joint required.  In many cases, only one or two linear joint pieces are used even though there may be four or even six t-slots in the extrusions.



Joint construction.

T-Slot extruded aluminium profile joints – Linear joints - aluminium extrusion

Linear joint ready for assembly

T-Slot extruded aluminium profile joints – Linear joints - aluminium extrusion

Linear joint partly assembled

T-Slot extruded aluminium profile joints – Linear joints - aluminium extrusion

Linear joint completed









The linear joint is completed by pushing the ends of the extrusions to be joined firmly together, then tightening the grub screws so that their flat ends bare down on the bottom of the t-slot.  This holds the joint piece(s) firmly in place and the two extrusions cleanly together.


T-Slot extruded aluminium profile joints – Linear joints - aluminium extrusion

Linear joint – 90mm & 180mm


Linear joints are available in a number of different sizes for the slot 6, slot 8, and slot 10 series of Alusic extruded aluminium profiles.  Also, they are available in anodised aluminium, zinc plated steel, and stainless steel.


If you want your own copy of the Alusic catalogue, go to our site main page, fill in your name and email address and click the Send button.  We will then send you an email with a download link for the PDF file.


T-Slot extruded aluminium profile joints – Stronger connection

Profile Joints – Part 2

As a person who is regularly building all manner of things using T slot aluminium extrusions, I occasionally come across a situation where a simple joint using a fixing screw just isn’t going to cut it.  Today I am going to introduce you to just a few of the many different methods of joining T slot aluminium profiles using items found in the Fixing Accessories section of the Alusic catalogue.

Late last year I was putting together a batch of custom designed workbenches when the owner announced that they wanted an LED light panel mounted about 1200mm above the main work surface of each workbench.  No problem, I thought.  Just add a pair of upright sections at the back of each workbench, build a frame to hold each panel and attach to the uprights.

That was all fine until it was let slip that some of the workbenches were to be indirectly attached to pieces of equipment that would put some not insignificant vibrations into the workbenches a number of times per day.  I quickly realised that the simple jointed cantilever design I’d thought of would likely not cope with the dynamic loads generated by oscillations, caused by vibrating machinery, of the panel and frame on the uprights.  Even though that simple jointed cantilever design would be fine with the panel as a static load.

So, a quick design review later.  It was decided to use fixing angles (084.305.033) for the main joints and make braces for the uprights using some joint angles (084.305.011).

fixing angle 43 x 86  joint angle for 40 x 40 profile


The fixing angles made the joints very much stronger than they would have been otherwise.  Using joint angles to make braces for the uprights stiffened the structure enough to almost eliminate oscillations that would be generated by the vibrating machinery.  Thinking about it now, just the braces may have been adequate to keep oscillations, and hence joint loads, down enough for the original simple joint design to cope.  Oh well … I think there is a saying in the engineering world that has something to do with “belts and braces”.

A few months after that, the same owner said they wanted some more workbenches (different design of course) also with the LED light panels.  This time though, they wanted to be able to adjust the braces up or down a little for operator head clearance.

At first that seemed a bit complex, not to mention costly.  A stock of different length braces to be removed and replaced by maintenance people as and when required.  I could see there would be no way to guarantee that adequate length braces would not all soon be replaced by the shortest braces, or even removed completely.  Not a viable option in my view.

Then the Alusic catalogue came to the rescue.  Instead of using a joint angle at the end of each brace and making different size braces it was decided to use a screw swivel joint (084.311.010) at the end of each brace.  That would ensure every LED panel support would be adequately braced as well as have a small amount of adjustment using just a hex key.

brace using screw swivel joints

To get your own PDF of the Alusic catalogue, fill in your name and email address on our site main page and we will send an email with the download link.










T-Slot extruded aluminium profile joints – Standard connection

Standard Connection

The standard connection is the simplest and most cost effective joint for Alusic aluminium T slot profiles.  It is a perpendicular (or square) joint using a single socket head screw (fixing screw) without the use of any fancy accessories.

In this simple joint the hole in the middle of the first profile piece to be joined is tapped with a thread to suit the fixing screw to be used.  The second profile piece has a hole drilled perpendicularly through at the desired location of the joint.  The hole is to allow a hex key to be used to tighten the fixing screw.

T-Slot extruded aluminium profile joints - Standard connection - aluminium extrusion



Details of how to make one of these joints are at this blog post.

Since this joint type is the simplest and most cost effective, it is by far the most commonly used in light, medium, and some heavy duty applications.  For more heavy duty and not so simple applications, other solutions are available.

The standard connection joint type is not limited to use with square profiles either.  It can be used to join rectangular profiles to square profiles as well as rectangular profiles to rectangular profiles.

Probably the only drawback of this simple joint is that it is not readily re-located along the second profile piece should the need arise.  Another hole needs to be drilled to suit the hex key at the desired new location.  Admittedly, this situation doesn’t often crop up, but it does occasionally.  For details of one of many alternative solutions, see this blog post; what are clamping plates.



Full Body Joint

One variation of the standard connection is known as a full body joint.  A full body joint can be used where slightly heavier duty demands.  The main difference in this joint variation is that the drilled perpendicular hole is to suit the fixing screw rather than the hex key.  This adds a small amount of complexity, and hence time, to preparing the joint, but it remains a very cost effective joint.


T-Slot extruded aluminium profile joints - Standard connection - aluminium extrusion                            T-Slot extruded aluminium profile joints - Standard connection - aluminium extrusion

Diagrams from the Alusic catalogue showing two forms of a full body joint.


Joining the other size aluminium profiles

This basic type of T slot connection is not only cost effective it is also incredibly versatile. All of our profiles can be connected this way without the use of any accessories and different size profiles can be joined in this way.



Technical Specifications of T-Slot Aluminium Profile

Extruded Aluminium T slot  profiles

Our extruded T slot Aluminium profiles generally come in one of the 3 standard slots as shown below. Please contact us if you need more information

6 mm Slot – 30 & 60 Series

Aluminium profile extrusion with 6 mm Tslot

6 mm T slot Aluminium Profile

8 mm Slot – 40 & 80 Series


 Aluminium profile extrusion with 8 mm T Slot

8 mm T slot Aluminium profile

8 mm Slot – 45 & 90 Series

Aluminium Profile Extrusion with 8 mm T Slot

8 mm T Slot Aluminium Profile

Technical Data for Alusic Aluminium Profile

All extruded aluminium profiles are manufactured by Alusic SRL (Italy) using a primary aluminium alloy EN AW-6060 (AlMgSi  0.5) – EN AW6063 (AlMgSi1). The metalurgic composition of aluminium profile bars is T6 (solution heat treated and artificially aged). The dimensional tolerances for aluminium profile extrusion are in compliance with the requirements for precision extrusion EB12020-1.

Chemical composition of alloys:

 Alloy  Cu  Fe  Mn  Mg  Si  Zn  Cr  Ti  Al
 6060  0.10  0.1 – 0.3  0.10  0.35 – 0.6  0.3 – 0.6  0.15  0.05  0.10  Rest.
 6063  0.10  0.35  0.10  0.45 – 0.9  0.2 – 0.6  0.10  0.10  0.10  Rest

The mechanical characteristics obtained after heat treatment at which they are submitted are:

 Alloy  Maximum Stress
(N / mm2)
  Yield Stress
(N / mm2)
 6060 215 160  12 70
 6063 245  200  9 80

Characteristics for the design of aluminium structures:

Young modulus 69000 N/ mm2
Electric resistivity 0.033 Ω mm2/ m
Thermal conductivity 210 W/ mK
Casting temperature 615 – 655 oC
Coefficient of thermal expansion 25 x 10 -6 K-1

In addition to a guarantee of high quality and dependability of the aluminium profiles and accessories for solar installations, ALUSIC is certified to a quality system UNI EN ISO 9001:2000 that provides confirmation of its continuous quality control of raw materials and processed materials and that demonstrates continuous improvement  of its products.

Further information, including R&D advice can be obtained in collaboration with Profilium and Alusic’s technical and commercial departments. Please CONTACT US for more information.

Need more information?

If you want more information on how to use our profiles, the benefits of using the Alusic profile system or you simply want a brochure or catalogue, then go to the Alusic Downloads page.

Alusic aluminium profile and accessories – faster, more cost effective assembly


A simple, yet strong joint can be achieved by using both
an Allen head screw and square washer screwed into theCONNECTION.JPG

core hole of the profile (see image on right). A small pilot hole is drilled opposite where the joining profile is to be located so that the screw can be tightened. This is the standard joint for the Alusic range and is a very cost effective outcome.
⇒ The cost per Alusic connection as shown is $0.34 using an M8x20 bolt (084.301.003) and 13×13 square washer (084.303.001).
⇒ Achieves an extremely simple, yet strong connection in under 1 minute.
A leading competitor’s equivalent connection costs $3.35 each and takes 3 times longer to achieve
In some applications you may also add our anti twist
device that replaces the square washer in the standard
connection. The twin tabs on the anti twist device go
into the slots of the connecting profile and stop any
twisting in the joint – a simple and effective solution.


The total time taken to complete a standard Competitor’s connection is 2-3 minutes depending on available tooling; with the cost of the competitor’s connection being up to 300% greater in labour costs alone, let alone the higher material cost of the connectors. With a competitors connection. the distance from the profile end, to the centre of the cross bush is critical to ensure the connector works effectively; if this is not achieved accurately this length of profile is left unusable whereas with the Alusic connection system the pilot hole is simply re-drilled and the adjoining profile tapped accordingly.


The distance of the pilot hole with Alusic profile is predetermined by the drilling jig with several millimetres of adjustment from side to side. With the Alusic connecting system there is also the option of self tapping the screw into the adjoining profile as opposed to pre-tapping to ensure the connector has the best possible fit and to eliminate any possibility of vibration affecting the joint. The potential for a loose join can also be eliminated with the use of thread locking products like LocTite although this is not essential as the connection is extremely effective without this process.


To demonstrate some of the labour cost savings that can be achieved using the Alusic system we have performed a cost comparison exercise. On the structure shown below, we conducted a time and motion study and have estimated the labour saving that could be achieved using the Alusic aluminium system when compared to a comparable, high quality European competitor’s profile.

There are 350 individual connection points on this frame with a saving of between 300% to 500% in labour costs using Alusic standard connectors. In other words, if using a competitor’s connector that takes up to 3 minutes per connection point, you would require 1,050 minutes or 17.5 hours just to complete the connections on this structure and cost it would cost $1,172.50* for the connectors. Using the Alusic connector it takes less than 1 minute per connection point, and you would complete the connections in 5.8 hours and it would only cost $119.00* for the connectors! That is 3 times faster than the competitor and an enormous cost saving in labour costs alone. That is a saving of 11.7 hours per structure and $1053.50* in parts!!