Outer Limits 4x4 Board

32NB = 42.4mmOD
40NB = 48.3mmOD
1-3/4" dom = 44.45mm

the standard dies are made for NB, but you can get other sizes just more $$$

if you use the 32NB die it will mark and flaten the sides of the tube, but you will have a uniform bend if you use the 40NB die you will kink the tube

you can grind out the edge of the 32NB die to stop it marking, it will also reduce the "crushing" of the tube

hope this helps

Stu

Just reading through the thread - seems a lot of people confuse Pipe for Tube.
Also seems a lot of people are using Pipe for cages - when I was always taught tube should be used for structural.

Some links with plans for making your own bender
These are a diferent type but I am told address the deforming problems as the use two dies
http://favoriteprojects.com/how_to_buil ... bender.htm
http://www.blindchickenracing.com/tools ... bender.htm

What good is a bender without a tube notcher
http://www.rorty-design.com/content/No. ... _plans.htm

more how to workshop links from Dune-Buggy.com
http://www.dune-buggy.com/buggylinks/Te ... /ShopTips/