paint

[mgglep]

Hi all
When painting grp panels should a plastic primer be used or would a standard primer be ok thanks in advance

[Talonmotorsport]

You need to key the surface by removing the shine from it, use some thing like 'scotch bright' untill the surface is dull all over. I then spray on a light coat of etch primer so it bites in to the GRP then a coat of high build primer, 800 grit wet and dry to flatten,pannel wipe to clean and then start with the colour coats.

[alga]

I thought etch primer bites into metals by virtue of being acidic or otherwise reactive with iron before drying. That would not affect polyester at all.

[skov]

I think the acid in etch primer melts the GRP slightly which helps bonding.

[skov]

I just painted my cycle wings using Phil's method and halfords rattle cans.
They came out pretty good considering I did them!