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Old 15th January 2018, 05:07 PM   #3
InternalCakeEngine
Junior Member
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Join Date: Jan 2018
Posts: 4
Default Re: Subtraction problem; leftover triangles.

Sorry for the delay - I've been designing (with AC3D) and printing some other bits.

I've tried reproducing the problem but have so far failed. It's worked a couple of times, left holes a couple more (which the fill-holes menu option can't seem to fix). I tried scaling the model up 2000% times before doing the subtract and now one of my CPUs is locked at 100%, the fan is running at full tilt and the screen won't redraw :-(

As an observation, I do need to merge the four cuboids before doing the subtract because if I try one at a time, the first subtract leaves the tube in a state where it has open edges which can't be filled. I guess the lesson is to use subtracts as infrequently as possible and to check the results carefully before carrying on working.
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