combitech® system Basis

These help DIY enthusiasts and professionals to drill in exactly the right place. On a round tube e.g. there are four drill alignment grooves – one every 90°. If you want to drill several holes one after the other on a standard round tube, it is very difficult to align them properly. But if you have a drill alignment groove, you even know where to drill the hole at the other end of the tube.
If you want to drill through a tube, you have major problems getting the drill to come out exactly vertically on the other side because the drill usually goes astray in the round section. If you have drill alignment grooves, you simply measure the position of the required hole from the edge and drill through the first wall. Afterwards you turn the tube around 180°, measure the required position of the hole again and drill through this wall too. You now have both holes exactly opposite one another.
As both holes are drilled from the outside inwards, you also do not get any drill burrs on the outside holes.

Another feature of combitech® is that the profiles fit inside and on top of each other. This is due to the fact that the size of the profiles is in line with the size of the metric threaded rods. That is why a round tube fits over the next smaller threaded rod or a round tube fits into the next bigger round tube.

A square tube also fits into a square tube, a round tube into a round tube, a bracket to a square tube, a flat bar on a rectangular tube, a threaded rod into a square tube, etc. This allows you to make telescopic rods or shafts and many other objects.
Another feature of combitech® is that there are many profiles not only made of aluminium but also plastic. Both materials are rust-proof and weather-resistant. On many units it is not necessary to use sturdy aluminium, you can also resort to cheaper plastic.

Another feature of combitech® is that there are many accessory profiles, which increases the variety of applications. For example there are square tubes, 1 branch; square-U 2, branches; tubes, 1 branch; tubes, 2 branches 180°; tubes, 2 branches 90°; double tubes; triple tubes; tube-tube 90°; tube sleeves; square tubes, 1 branch offset; square tubes, 2 branches offset; etc. The next smallest threaded rods or round pipes also fit into these tubes.

Another feature of combitech® are the standard accessories. These include end caps, a step drill, gussets, nuts, base discs, rubber buffers, springs, ring nuts, knurled nuts, screw-in nuts, a handwheel, connecting bushes, hinged plates, eyes bolts, tensioners, setting rings, etc. These parts further increase the variety of applications.

The alfer® tool assortment provides a variety of small and handy helpers with which our profiles can be machined quickly and easily.
As well as our picolo, precision and vario miter boxes, our multi-clamp, and our keyhole, mini and maxi saws, you will also find our professional ruler and professional angle.