I've got the book; it's good advice to have one on hand. However, I'm looking for a chart with bend allowance, or 'setback' that shows how far away from the finished outside dimension to start a bend using a 'standard' tubing bender. Similar to the cheat sheets electricians use to bend EMT to fit within a given space. Those charts ignore bend radius because the bender sets that. They just tell you how far back from the finished dimension to start your bend, to end up in the right place. I'm probably overthinking it; I suppose I could come close enough by just measuring my bender's dimension & adding 1/2 the thickness of the tubing.
Thanks,
Charlie