To make the cut pattern template,
Simply cut the shaped tube segment at the end of the tube - cut straight.
Iron and flatten out the tube segment. Don't use any steam, it could de-laminate the tube.
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Here's the "bell" pattern flattened out.
Draw a 1" long reference line to you can size it when it goes into your graphics program.
The flattened tube is traced. I actually only traced the top side, copied that and flipped it over to the bottom.
Add a center line for positioning on the body tube.
Print a few of the templates, wrap around a tube and tape closed. Trace with a pencil and carefully cut out. Sand the segment against the main air frame tube as shown in the previous post.
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