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Anomalous Circle Trim

Posted by electrosteam on May 14, 2018; 10:19am
URL: https://forum.librecad.org/Anomalous-Circle-Trim-tp5715994.html

If I draw a circle, then a diameter, then try to trim away one half - it mostly doesn't work.

I solve the problem by adding a chord in the half to be trimmed, trim the circle to that, then trim the small arcs left to the diameter.

My problem is, I frequently get the required half erased when I attempt to remove one of the short arcs.
It is as though the machine remembers what I was trying to do, and tries to help out.

I say anomalous because I am not sure it always happens as described, just often enough to be annoying.
I frequently get some sense by undo, change the reference point and zoom in a bit.
I always get there in the end.

But, is there a sure-fire way to do this sort of activity ?

John.