Yesterday I modeled this bench after on made in Sweden in the 1940's by Nordiska Kompaniet. I was thinking I'd share a thing that you other SketchUp users might find useful. All of the mortises, grooves, and other holes were cut automatically using the Trim tool in Bool Tools 2. This is an extension that adds Boolean operations to Sketchup. It's similar to the Solid Tools in SketchUp Pro but it's also different. It respects the component features and it works in SketchUp Make. While it is not free, the cost ($20) is fairly minimal. Especially if you consider the time it can save you. This isn't meant as an advertisement and I certainly don't get anything out of it. Just thought someone might find it helpful.