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Old 2nd Jan 2020, 10:11 am   #39
Argus25
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Join Date: Oct 2016
Location: Maroochydore, Queensland, Australia.
Posts: 2,679
Default Re: Re-spraying record decks.

Quote:
Originally Posted by Scimitar View Post
Quote:
Originally Posted by Argus25 View Post
It depends a lot what base metal you are dealing with.

If it is a cast aluminium like metal it can be very difficult to get the new paint to stick well without an etch prime.
That was certainly the case years ago, but with the advent of epoxy primers, it is not an issue. It outperforms all the specialist (and reactive) primers of old. Properly prepared with 120 grit and clean, you will need a dangly grinder to remove it. Steel, aluminium, GRP, plastics, you name it, epoxy primer sticks like the proverbial and is totally inert once cured. It is also very flexible. That means that you don't have to worry about solvent sink or reactions spoiling the finish and it will even work on bumper rubbers etc.

It really is a wonder material, if you have no experience of it, I recommend that
you test it for yourself. It doesn't contain isocyanates, so no special PPE required, even for spraying.
I might have to disagree with you on this. Any surface prepared with 120 grit will adhere to even the poorest quality paint, either lacquer, acrylic or enamel.

The issue is , as pointed out by others, a paint job is no better than the surface it sits on. Unless the paint is abomanably thick & ugly.

For a proper finish it requires the surface is finished to at least the texture seen with 1200 to 2000 grade paper, or either the thick paint masks the scoring from the 120 grade paper or the correct thickness paint shows the scoring from the 120 paper. So you cannot have it both ways.
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