I completly agree with you, this method fits when you cannot clamp or you just have a grinder and no hole saw. Have a try, it might help you one day : )
Sorry to hear that, I made just a test and firefox did show properly the pdf. Perhaps pdf format incompatibility ? The test I just made was diameter 100, inserted diameter 80 and angle 20. What was your parameters ?If you have decimals, separator is the point , not the coma.
For me it was hp 48 gx but I did not have a printer then i wrote a tetris ;)
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