I didn't draw any plans, just measured a few times and then went to cutting a bunch of particle board leftovers at the table saw. I routed rebates on the sides, fronts and backs to lap the boxes and sink in the bottom. It turned out that having no plans was a stupid idea. I cut exactly on the lines as I calculated and measured, however, the math in my head fell apart when it eventually met reality. The bottoms are too short, so I gotta glue on some strips. Also, with the longer fronts, the sides won't work either, I have to fix them as well. :-D
Finally, the lid of my cyclone bucket broke when the negative pressure got too large. Oh well. It was just an old wood glue bucket, I've got another empty one, so I can use that lid but strengthen it first with some plywood. Something for future Lyse to deal with.
All in all, it was still good fun. Wood (haha) do it again, but at least with some sketches on paper. ;-)