Basil Posted December 9, 2023 Share Posted December 9, 2023 Hi, following on from my post re adhesive for PP. I have been, or at this moment looks like I have managed to mate PP and balsa to make an engine cowl. What I need to do now is paint the cowl, both PP & balsa. So I need either a finish paint or in best a primer that I can then repaint to a selected colour, as yet undecided . for a finish I would prefer an easily available spray can type ie from an outlet like Halfords. ( By the way they now do other paints, in cans and tins for models and such like, including camo' .) The whole cowl , excluding the PP, has been coated with sanding sealer. I have no experience of paints and RC planes. Some of the model will be covered in Diacove 1000, from Sarik, thought I would try it out. Many thanks in advance. Bas Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted December 10, 2023 Share Posted December 10, 2023 Doesn’t look like many people have ever tried painting PP (polypropylene?) I can only suggest trying a proprietary plastic primer as sold for automotive panels and bumpers. Quote Link to comment Share on other sites More sharing options...
Basil Posted December 10, 2023 Author Share Posted December 10, 2023 (edited) Hi Martin, I am trying a primer from Halfords. Aerosol, acrylic based over an abraded surface. After a couple hours it seems to have good adhesion, needs to harden properly, at least a couple of days before a final decision on adhesion is made. Your suggestion is a really good one did not think of that, and I come from an automotive background to. Thanks good suggestion. Take at least 10 brownie points. Forget what they are made of, have to look it up. Bas Mainly Polycarbonate, impact resistance. Edited December 10, 2023 by Basil Quote Link to comment Share on other sites More sharing options...
Bruce Collinson Posted December 10, 2023 Share Posted December 10, 2023 Is it etch primer? BTC Quote Link to comment Share on other sites More sharing options...
Basil Posted December 11, 2023 Author Share Posted December 11, 2023 No Bruce, a bog standard primer as stated. I will examine it more closely now it has had time to harden. Bas Quote Link to comment Share on other sites More sharing options...
Basil Posted December 12, 2023 Author Share Posted December 12, 2023 Well !!!!!!!!!!! the primer has now dried hard. adhesion is good, it can be scrapped off with a finger nail not to easily . I would suggest that it will be OK for the use that I want ( Cowl rear) as it is not subject to hard abrasion etc. Subject closed I think. Bas Quote Link to comment Share on other sites More sharing options...
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