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JohnFox

Hollow threads/helix

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I have just been trying to make a threaded hole.

Using Sketchup, I made the helix on its own, copied and pasted it into the object with the hole, then moved it into position.

When I exported it into Cura everything worked, except that the threads appeared to be hollow, with only the outer shell on them. They seem to stay hollow even when Cura is set to 100% fill.

Any ideas?

Not sure if this is a Cura problem or to do with Sketchup.

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I can answer my own question.

The problem lies with Sketchup. I was trying to make a thread with a circular cross section, changed it to a triangular one and it worked OK.

Cura really does pick out the problems before printing. I don't always trust the 'normal' view but the layers view seems to be 100% correct.

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