When last painting the epoxy primer on the shell, I rushed the job so there were quite a lot of runs and bad orange peel. I had to re-sand the entire shell inside and out to remove the runs and orange peel which did expose a lot of bare metal areas. This re-sand work included detailing the engine bay and front apron. I masked off the underbody to prevent any overspray getting on the underbody coating then I got two good even coats of epoxy primer with the paint gun adjusted properly. The next stage of painting requires the correct PPE as the high build primer contains isocyanates (classified as a carcinogen). I purchased a full-face respirator with chemical vapour filters to prevent any absorption via skin or eyes, and was used with the full coveralls and gloves I've used previously. My paint shop advised that a white primer would be required to yield a bright finish with the final paint colour. The white primer has the benefit of showing if I sand through the high build primer and
Prior to applying the underbody coating I 3D printed a heap of plugs in various sizes and inserted them into any nuts/rivnuts to stop the underbody coating from getting into the nut threads. All other openings in the underbody and engine bay were simply taped over with masking tape. The rest of the shell was also masked off with paper & plastic sheet. Note the two mating surfaces for the steering rack was masked off too. Underbody coating is a messy job so the floor was covered in old bed sheets and I wore a full body coverall, nitrile gloves and safety glasses. It was applied to floorpan & inner wheel guards & boot floor with a schutz spray gun. After the underbody coating was completed, everything was painted with 2 coats of satin black. At the same time I painted fuel line/battery line underbody covers with the coating. The middle area of the lower firewall had been masked off as it will be painted in the body colour. The black underbody coating seen here on the firewa