This is my own design of a berd air bending and drilling jig, I have included several pictures to show how it is used,
The holes in the tube are at 45 degrees the reason for this was because I found the normal straight drilled tubes didn't cool fine points to well and the nozzle heat would spoil the finish,
The aluminium tube used was  K & S 8101 Round Aluminium Tube (Pack of 3) 3/32" Dia x0.014" Wall and can be found here, I used a 1mm drill bit in a pin vice / chuck
https://www.ebay.co.uk/itm/K-S-8101-Round-Aluminium-Tube-Pack-of-3-3-32-Dia-x0-014-Walls-x12-Long1st/361287460750?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
NOTE:
You may need to use a little wet and dry to sand the bender centre pin to a nice fit or ream the hole,
Use a 3mm x 10mm cap head screw to hold the roller on
The holes on the 45 degree jig come out at the opposite side off the jig due to the angle.
28-04-19
Added two new stl files a new 45 degree drilling jig with a slight error correction from the first one and, A straight…