Pipe Bending Jig
There are many good systems on the market today and some excellent home made jigs that will do the job as well as an expensive setup, the system I use is made by a company called Groz, the system is made for bending all kinds of material, from tube to flat sections
I have adapted and modified the original parts to best suit my needs.
Picture above shows the kit, with the addition of the two aluminium guides, one for the Bass mid returns and the
other for the Bass end return, and two plastic forming wheels, one in yellow and one in black
Showing the hand rolled tube in place, with the aluminium guide and centre wheel in place
ready to go.
Showing the tube now bent, notice the end of the hand rolled tube is drilled and held in place with an Allen bolt, if a
tube is not secured, below is what normally happens.
This happens because, when an unsecured tube is bent around the centre wheel, the tube tries to follow the aluminium
guide and gathers up behind the centre wheel, culminating in a kinked side wall.
Notice also the position of the seam, here it can be seen sitting on the side of the tube, this is the correct place for it, if the seam was positioned on the underside it would be compressed, and positioned on the outer side stretched and can also burst open, by
positioning the seam on the side of the tube like this, it follows the path of least resistance.
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