Avoid this product--Rustoleum Ultra Cover clear gloss

Don't like Testors?

The clue is on the can... Seals, Protects and REVITALIZES. Yup, that'll ruin a perfectly good paint job.

...That's why nothing from a Hardware store goes on my models...

Nathan - I use Rustoleum Primer, and clear coat from Walmart and never had issues with them. Heck even back in my youth, I used hardware store spray can paint from my grandfather's stash on car kits. That's why everyone should always tests the product on scrap kits.

I have to say that I have used-- and still use-- this specific product and the only issue I ever had were the results of my own mistakes-- spraying too close to the model or spraying too long in one place, which caused some  build-up issues. I have used it over rattle can spray jobs and over water based Polly S acrylics applied with an airbrush.

Well, maybe it's just me. I hear so many comments on this and other boards about the virtues of this product or that being as good quality and cheaper in price than a modeling-specific product.  You hear Krylon and Rustoleum bandied about frequently. Almost always I do run a test on a piece of scrap, but not this time. My fault, I guess.  At least another coat of white primer will probably fix it.

If I'm not mistaken Testors is also owned by Rustoleum (or the other way around?) So I will use their primer and clear coat in rattle cans. I'm not too keen on the Krylon brand though.

I actually have a can of that stuff for a project of restoring the clarity to some plastic headlight lenses on my truck. I saw the piece on YouTube and is recommended after wet sanding the plastic because it's UV resistant. I was reading the label and says "Test paint in a hidden area first".

I have used the Krylon decanted primers, specially on soft rubber tracks and it has worked fine but those clear finishes seem to be a different case. Even though the modeling clear coats are a bit more expensive, they do last a long time and  are compatible with modeling paints.