I have 2 simple solids. When I subtract the smaller one from the larger one, the result is not a solid but a group with 2 surfaces missing. file enclosed.
Anyone have a solution? … Thanks!
Subtract Problem.skp (85.5 KB)
There’s a section of the existing cutout on the leg has some faces that are so close to being coplanar (but aren’t quite) that fall in the tiny tolerances issue. Deleting coplanar edges on the leg removes the edges between those faces, too.
Change the shape of the cutter so the long part is one straight edge rather than almost straight.
I don’t want to talk you out of doing Boolean subtractions if you’re in the process of learning but I would model that leg differently. I would draw the shape of the cutout on the leg and then use Follow Me to cut both inside faces. Quicker and easier that setting up for Solid Tools.
I would also also rotate the leg to add the rake (and splay if any) after making the leg a component. The component’s axes would then be aligned so the bounding box fits correctly. This would be especially important if you expect to generate a useful cut list from your model.
Also note, if you are going to use the Solid Tools consider that they will convert components they modify into groups called “Differences”. If you don’t want that to happen use Eneroth Solid Tools or Bool Tools 2 (see the Extension Warehouse) becuse they both respect the "component-ness of components.
You can see it is a tiny face issue by scaling up by 10 and it works.
@DaveR recommendations are spot on.
1 Like
Thanks you so much for the quick response! I wasn’t aware of the Tiny Tolerances issues with Sketchup. Your technique worked perfectly and thanks for the very detailed How To instructions. Fantastic!
Eric
2 Likes
Thanks you so much for the quick response! I wasn’t aware of the Tiny Tolerances issues with Sketchup. Your technique worked perfectly. Fantastic!
Eric