First model since I was a kid…So I am starting a 1/72 Revell Fokker Dr1 and it comes molded in that yucky red plastic. The only primer I could find at my local shop was a small spray can of Testors enamel primer in gray. I gave two light coats on Sat. night which layed down very well. My question is, as of yest. evening, the sprues felt dry to the touch but I could take my fingernail and pretty easily scrape off primer from the surrounding sprue arms. Also, if I held the sprue for any lenght of time, I could start to feel a slight gummy quality I guess from the heat of my fingers. Is this normal or is it going to take 36-72 before it is fully cured and I can no longer do that? I am unsure of when to start with my painting of small parts which will be done in all MM enamel paints.
I have been doing some searching and read where another fellow had a similiar prob. I cleaned my parts while still on the sprue with 91% Alcohol but wiped and dried them very good I thought…could the alcohol be the prob. as in this mans case? I would have figured that primer would have been good to go within a few hours.
I’ve had exactiy that problem with their grey primer - the reason I don’t use it anymore. I posted of my problems here a couple of years ago and got advice including to let it cure (dry?) for days to thin it with lacquer thinner. I let it set for a couple of days with no joy. Cleaned it all off with mineral spirits and tried thinning with lacquer thinner. It did dry ‘completely’ but after several hours. And, frankly, I still don’t know what caused the problem. I had cleaned the sprues with soap, water then 70% isopropyl alcohol. I’ve gone to all acrylics since (except for Alclad) and haven’t had a problem. Wonder if your Primer could have come from the same batch as mine. BTW, I had used other Testors enamels and they are slower drying but within an hour or so - NOT days. Just my experience.