Hello! This is my first post on the forum. I have used rhino for a few months now, but I still have a long road ahead.
I have a problem with Boolean Difference, or maybe I’m just using the wrong tool for the job.
I’m modeling a guitar neck. First I made the center block, and now I want to cut t with the shape of the grey curve.
I get “Boolean Difference has failed” all the time. I know how to use the tool because I tried with simple shapes first.
Any help is appreciated (and sorry for the bad spelling )
Boolean operations only work with solid bodies.
The grey part seems to be a surface. If you want to make a “boolean difference”, you need to make it a solid first.
Hi Mat - you can use BooleanDifference here but you’ll need to clean up a bit and make a couple of changes -
the solids are not all very clean - the one closest to the camera, as the file opens
has a sliver surface here:
I’ve separated the surfaces - that vertical line is a zero-width surface - you should get rid of that and make the overall side there from two surfaces that meet cleanly.
Once that is cleaned up, I’d duplicate the cutting surfaces and ExtendSrf a short distance - 2 in this case should be enough, and Join. The idea is to make sure they fully intersect the solids.
You should now be able to Boolean, however, one of the solids sill fails - you’ll need to Explode to surfaces and split/trim and Join ‘by hand’ for this one - my guess is the edge of the cutter at the rear that is coincident with the edge of the solid is what it is not happy about. (V6 handles it, btw…)
In general the way to troubleshoot Booleans, at least as a first run at it, is to Intersect the objects (not BooleanIntersection) and look at the resulting curves. And keep in mind that Trim/Split are the longhand versions of Booleans and using these on the surfaces involved can often either work when a Boolean fails, or show where the problem lies. Matkat boolean_PG.3dm (867.0 KB)
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