Quote:
Originally Posted by lukevanoort
When we tried to wrap it around the tube, we were unable to get it to fit right and it buckled when forced into position.
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Remember that the center hole is no longer round when you turn the donut into a helix. You may need to trim it a little bit, especially near the 'cut' in the donut.
Cutting polycarbonate with avaition shears may prove useful.
Also, maybe try to be a lot more precise with your cutting? I am sure it can be done...