Parametric bellows template
thingiverse
Just gave creating a custom template as a sketch in Fusion 360 a shot. It's got user parameters for width, height, and length. Still need to figure out the compressed and expanded lengths though - someday I'll get around to it. Check out this link to my Fusion 360 project (it's just the sketch): https://a360.co/2HqkBsV Don't download those .dxf files, they're static; instead grab the fusion project and customize it yourself. For printable things, take a look at these: https://www.thingiverse.com/thing:2007634 https://www.thingiverse.com/thing:3627478
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