The workbench
To make it work most important for me was a good working place, it means sufficient space and a large workbench. I did have the space, but I needed to make a practical workbench. On the internet you can find many designs for workbenches. You need a good design before you start to build (see references). For this part of the project I did not use sketchup, because I did not know it at that time, moreover this is less complicated than the interior of a camper. And on top of that you don’t need a workbench to make a workbench (there is a hole in the bucket …)