A friend worked in the supply room of one of the large companies near here and plumbed all his lines including the nitrous w/Swage-Locs. He got fired But it sure was nice looking plumbing.

I do have a good Rigid brand 37* flare tool. Unfortunately my bender for 3/8" tubing is mediocre and my very good 3/16 bender wont quite hack it!!! . I've been dragging my feet today(mowed the lawn, rebuilt the weed whacker recoil, etc) and tomorrow may wander a bit to see if I can find and invest in a better bender. For templates, I generally use 3/16" steel brake line - it USED to be fairly cheap - like $2-$4 for a 4 or 5 foot length - no more, $5 to $7 on Friday.