I sprayed my M41 with Testor’s Dullcoat and the Tamiya acrylic started coming off on my fingers. I had the acrylic, 3 coats of Testor Glosscoat and an oil wash on the tank for a week before spraying with dullcoat.
Any idea why this happened.
Has it been really humid where you are? Maybe with the humidity, the previous layers did not completely cure?
I would check with testors about that problem, I know Windex will take off acrylic once sprayed on, But the dullcoat should of not harmed your other paint. Might try asking Tamiya too.
After repling, I went to Testers and Tamiys and asked that question if or why. When i get back any answers I will let you know. Don’t want that to happen to me or the rest of modelers. Thanks for bring this problem up.
Marine 66
I’ve had the same problem. You really just shouldn’t be touching it until the paint dries. But yes, it is unfortunate how much the dullcoats soften everything up.
It’s possible that you may have applied the dullcoat too heavily and the solvent has attacked the underlying paint.
As a general rule, when painting over a dissimilar base, “hot” paints like lacquers (which include Testors Gloss and Dull coats) should be applied in light “mist” coats from no closer than about 12 inches. Each coat should be allowed to dry before applying the next.
I think I did put it on too thick. I tried again last night with lighter passes and all seemed OK. I also got a new can of Dullcoat at HL, since the old one was about 10 years old.
hmmm, the age of the old can may have had something to do with it too, even after shaking it around the dullcoat may have separated some.
I’ve had good luck with Testor’s dullcoat over Tamiya acrylic so far, using very light coats though.
Did you have to re-paint?
I’ve had issues when enamel based paints/sprays attacked/crazed acrylics and caused them to bubble up and come off…a chance you take when you mix mediums…to minimize, ensure long cure times and spray with lighter coats in a non-humid environment where the carrier/solvent can dry quickly…
I swore off Testor’s Dullcote the first time I used it. it’s so chemically hot it melted my plastic antenna immediately and ruined a 50.00 model. I misted two very light coats and it was not humid. That’s never going to happen again. I repaced it with Model Master Flat Acryl and haven’t looked back. Wonderful product. Just my experience other peopel swear by it.
Sometimes I think I build so sporadically that my dry times are always long enough!!! [:$]
Found a answer for you: Testers said they are not aware what their paints or products do to other brands,But Tamiya came back with the best answer. Apply light coats of Tamiya TS-13 gloss clear, allow it to cure for 3-5 days, then apply light coats of testers dull coat to the finish that you want. Applying too heavy will cause Tamiya paint to soften and run. Hope this is a big help to you and anyone else with dealing with the problem
Marine 66
Nasty!
I managed to completely strip a very nicely painted figure with dullcoat but that was my fault entirely - I didn’t allow enough ‘cure’ time.
I highly rate the Humbrol Acrylic rattlecan dullcoat - it’s superb! I’ve tried a variety and have found this excellent.
ATVB
Ben [H]
Here’s a particularly nasty case that someone had here a few years ago - ouch…
/forums/t/52270.aspx
I use Gunze Aqueous Hobby Color H-20 Flat clear - no mess, no fuss. Just thin and airbrush.
Got a new can and it worked fine. I think it was a combo of an old can and too heavy of a coat.