Again, Tubemiter program to the rescue. I can't overstress how much my
work improved after I got ahold of this program. It prints a template
for the fitup.

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This is yet another nice example of how computers can ease the task of
airplane-building. (The Old Fashioned Way is to coat the tubing with soot or
Dykem, fix the thing at the proper angle, then slide a flat-sided scriber
around the intersecting tube.)

While templates for tubing joints are an especially good example of using
computer-generated patterns, the same principle may be applied to any part
requiring the lay-out of holes, bending lines and so forth. For those
interested, the article for the carb heat box in the Fly5kfiles Group archive
uses this method to create both the box and the tubular ducting connectors.

-R.S.Hoover