I really wanted to like sketchup.
I have been looking for a good alternative to the autodesk products. They are complete, but very expensive with antiquated controls, and often an overkill for my relatively simple 3d printing needs.
Eagerly I downloaded sketchup with the pro trial, to allow “solids”.
The interface was good. Nice intuitive panning and moving. To do precision work was a bit fiddly, but I got there eventually. The chamfering and fileting was also a bit fiddly, but could almost always be done with a bit of patience.
Groups and components didn’t work particularly intuitively or well. It seemed difficult to group solids, into a new solid, without making a union, which then made it impossible to go back and move a piece of the construction. I never really got the hang of them, but with more time I may have.
But the thing that was a show stopper was the solids. Putting two solids together, which were in any way a bit more complex (curves, chamfers, slopes, splines, arcs) and you would invariably have holes and hidden faces, which would then stop this new construction from being regarded as a solid.
The standard solution is to download a plugin which highlights these flaws, and laboriously go in and join the dots. There were often between 20 and 100 micro alterations to be done on any merged surfaces. To make it worse, if you then had to move the positions of one of the pieces, you would most likely have to do it all again. Of course I couldn’t move the pieces because I never understood how the components and groups worked with respect to solids, so I had to go to a previous saved version where they were separate solids, move these(save new version for later edits), unionise them again and spend ages joining the dots again.
I’m sure that 3d solid merging algorithms are not easy to get right, but if my CAD software can’t do it then it is not suited to 3d printing.