I am repairing a boat which is a pale cream colour.
I am doing structural work with polyester resin and glass mat.
To finish I want to use Topcoat. I have a pot of white topcoat, and I can get a good colour match with a squirt of cream pigment.
Will adding approx 5percent pigment to Topcoat which is already pigmented have a bad result? What can I get away with? No great stre nth is required, but the good bond to the new resin is obviously vital.
Hope you can help!
Going over 10% pigment starts to soften gels and topcoats. If you add 5% cream to the [roughly 10%] white you wont achieve full hardness but I don't expect it to be significantly compromised.
Basically any pigment is a contaminant, the more you add the more it will affect the resin you mix into it.
so basically I should use as little as possible, many thanks for the quick reply
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