I am going to spend the day calibrating, after a "success" but the successful print didn't work as intended. So I am going to use some calibration tools and document that, inc. tomorrow or maybe Wednesday.
In the meantime, here was an actual success! An organizer for the games Codenames. I had to use sketchup to edit it a littl bit, removing 2mm from each end do it would fit on my printer. The original size would have fit perfectly the other orientation in the box, but this way, the hourglass holds it in place perfectly.