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Metallic Gold Spray Paint6/23/17
I made this table out of MDF and sprayed 4 coats of Valspar Metallic Gold spray paint. I waited 24 hours between each coat. after the final coat I waited 2 days to start masking it off. The tape wasn't quite right so I took it off and it messed up the paint!!!......it's the blue tape painters use. Did I not wait long enough??....I'm in Northern California and it has been very hot lately.....is it the heat? what is going on? and what do i do now?
Evidently 24 hours between coats was not long enough. I'd wait a week, then try a wash with mineral spirits to remove any adhesive residue. Then I'd scuff the last coat and apply a new one. Wait a week, then finish what you were doing.
First thing, throw out the painters tape!!! blue or not, it is crap. If you read the fine print on it they say remove within 24 hours.
The paint was not cured enough to avoid being damaged by the tape. Without knowing what kind of paint it is, it's hard to say how long you will need to let it cure before taping - a week should be enough.
When you repaint, you can make a sample at the same time and use it to test the cure time before touching your table.
when painting cars or any other item we cant wait a week for paint to cure. That is why they make tape to go over very fresh paint. The key is the right product for the right job. The adhesive is completely different on these type of tapes.
Make sure you don't sand the MDF too slick, especially the flat surfaces. I know you have to sand the routed surfaces a LOT to get them acceptably smooth, I'm not talking about those.
You have some adhesion issues obviously, and when I see this on MDF, I'm almost always seeing where the raw surface was slicked up too much with something like 320 or 400 grit.
The flat surfaces need 180.
I went and got the yellow "Frog Tape" and that seems to have worked......also, I actually sanded the MDF with 120 before starting. Thank you for your responses.
Used a similar type spray paint when I was finishing a project for my den, involving an old clock. Check out how I did my finishing. Custom finishing