Fido Montoya

Well I tried some of the Bob Ross brand grey gesso and I'm loving it. It shrinks in tight and I can't see any detail being obscured. The white primer from the 'Pro Art' brand was completely different in a bad way (although I'm a little more careful when I apply the grey now to avoid a lot of extra gesso forming up as well). I don't know if the company is to blame or if all white primer is awful for miniatures as this thread implies, but I'm happy with the grey at any rate. I'm using it on the Super Dungeon Explore minis btw, just like the OP.

Yes, that can sometimes be the case as well. I know the humidity is through the roof most of the time here in Arkansas, unfortunately.

Most spray primers should work, from automotive to model specific ones. There are those who say there is no difference other than price, but as others have said it is best to test on something to make sure. Very light coats at the proper distance is the key. If it comes out looking fuzzy then congratulations, the area you live in is too humid and you might have to resort to brush on primer or gesso like myself. :'(

Super Dungeon Explore minis are vinyl? I thought they were styrene or something because the material feels like model plastic to me. At any rate, I'm in the same boat. I bought some white acrylic gesso from a brand named 'Pro Art' and tried to glop it on like I've heard is possible, but it stayed gloppy and chalky. The mini I tried it on is soaking in simple green as we speak. I think I'll try some Bob Ross black gesso next (have to admit that I laughed when I saw the Bob Ross line of products). Maybe it will work better and I'll end up with something usable. My only other option is to go back to the grey model master brush on primer, but it takes too many thin coats and I'm a little on the lazy and impatient side (too humid around here for spray primer). Cheers!