I've been googling and searching so long that even my momma thinks my mind is gone. And for all that I've come up a bit short. Are there any free templates or template making programs that I can just print pieces for so I can make my own elbows and y-fittings and whatnot? Ideally meant for metal ducting, found something for PVC on Bill Pentz site. I am using metric piping too which is 160mm or 6.3" so that complicates matters a bit.
I reeeallyyy wanna save money on not buying these things if I can...