To successfully subtract a void solid from a positive one, the void solid has to be created after selecting Edit on the positive solid already created, or within the original sketch process where you create the positive solid.
In other words: if you create a positive solid and finish your sketch, and then you start a separate void solid in another sketch, the contents of both sketches won't combine. One has to be an edition of the other, or both be created within the same sketch process.
Alfredo Medina _________________________________________________________________ ______
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