1. I want to PC my dash cap and transom plates clear so i need to get the scratches out the pad of the jigsaw made while i was cutting them. Will bead blasting get them out or do I need to sand them? I can only find 120 grit for a belt sander and it seems a little course.
2. I want to avoid using washers with my socket cap bolts for my transom plates. Any ideas of making the water tight? Silicone would make a mess and look terrible. I'm afraid O rings will not work since I have to crank the bolts down too tight. All of the flat rubber washers stick out too far on the sides. Ideas?
depends how deep you made the scratches and how shiny you want it to be when your done?
If you want the clear to stick it will need to be roughed up a bit or it will come off anyway.
If you clear coat those parts you will have trouble with the clear getting opened up anywhere you have a bolt going thru it. I have been down this road before and it takes allot of time and carefull planning to not mess up the parts.
As far as polish rub rub rub till your fingers bleed or buy a buffing wheel or polisher
Use a orbital sander and work your way up to wet sanding. Any good auto parts store should carry what you need in sandpaper to get the job done.