Subtraction - probably something dumb :-(

[mihai.s]

You’re welcome!

Trimming problem

It is quite possible to make two solids that subtract to give a non-solid result. This is because the intersection process can involve tiny edges… SketchUp regards points closer that 1/1000" apart as coincident and ignores the very tiny edge that would result, as a consequence the faces supported by that missing edge are also skipped, leaving a ‘hole’ in the surface and thereby zero volume for the now non-manifold geometry. If the CAD imports are drawn to a ridiculous level of detail then the…

SketchUp Shop Challenges - What am I doing wrong?

It’s not a bug. The thing you are butting heads with here is when you get too many segments in a small arc or circle, the points effectively merge due to the tolerances set in the software. The reason for telling you that you’ve chosen too many sides for the arcs/circles is to prevent you from creating models that can’t be printed because they aren’t watertight. The easy solution to this is to work in meters instead of millimeters. You enter all of your dimensions as if they are milleters but u…

Search in forum about ‘tiny edge’ or ‘small scale’ and you’ll fine a lot of discussions about working on a very small scale.