I used 220 grit sandpaper and oil based, satin polyurethane to finish the bus conversion walls and kitchen counter. For simplicity, I will keep the focus of this post to one section of the bus. Same process applies for all the walls.
The kitchen counter is a prebuilt unit but didn’t come with finished side panels. So I had to add some sanded 1/4″ lauan plywood. This is the same material I used for the bus conversion walls.
Here is the lauan plywood cut and test fit.
Prebuilt counter after being hand sanded with 220 grit sand paper.
Improvised work spot by the side of a river in Oregon.
Sanding the walls panels that aren’t already attached. The attached walls were also sanded with 220 sand paper.
After polyurethane is applied. The polyurethane was easier to apply on the unattached wall panels, less worry and monitoring for drips. I used a roller to apply the polyurethane then went back over the surface with a foam brush. I felt like this sped up the process.
The polyurethane drying on the panels for the side of the kitchen counter.
Clamping, wood gluing, and screwing the finished panels in place. I used trim screws instead of nails.