[OpenSCAD] difference() over intersection_for() crashes

MichaelAtOz oz.at.michael at gmail.com
Wed Jul 17 19:20:38 EDT 2019

No crash for me. 
Initially it looked like a hang, but it came back eventually, with VEEERY
slow preview motion updates.
I have preference/Turn off rendering at = 100000000 so I didn't get the

When debugging I changed the loop to angle based

    rotate([0, 0, a ]) 

As I added more 36*n's, preview performance went down quickly.

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