Little Dorrit
Well-known member
I am rubbing my very old and tired GRP Hull down with a light 400 grit sandpaper before farecla 3 then 6 and then polish.
A test seemed to show the results are foing to be good..however I keep getting strange looks and warnings not to go through the gelcoat.
How can I tell how how thick the gelcoat is & how will I know when I have overdone it?
A test seemed to show the results are foing to be good..however I keep getting strange looks and warnings not to go through the gelcoat.
How can I tell how how thick the gelcoat is & how will I know when I have overdone it?