Hi Troops
Just sorting out my home brew tube bender.
Few tweaks to do, but ....
Is there any laid down info re: Tube OD; Tube SWG ( AWG ); and minimum bend radius ??
Pic is of 5/16" OD x 18 SWG annealed copper tube.
It is 0.310" OD measured and the tube bend is 'flattened' to 0.316".
This is with a bend radius of 0.687".
ie the "U" bit is a 1 3/8" half circle. Or, at least the middle of the tube is ...
All sorts of stuff re: boiler tube dimensions, WP etc. but nowt about bend radii acceptable ??
Any pointers from the boiler geezers ??
Dave BC