On Saturday, October 26, 2019 at 5:39:05 PM UTC-4, Roy B. wrote:
Per
Do you use the same machine for sanding the primer that you use to remove the gel coat?
ROY

We use Porter Cable orbital sander with Mirka 23-388-080 adhesive backed discs for most of the removal. Other grits are sometimes useful. Last work is by hand.
Primer/filler is hand shaped. Final finish sand is orbital with finer grit.
Contact directly if you want more info.
UH