I use Krylon Low Odor Clear Finish Matte when I want a spray-on coat for print-outs of various kinds. Ink-jet ink and some other copier/printer inks can run if used for decoupage, for instance. Minwax polyurethane is available in both brush-on and spray-on options and is probably a better choice for miniatures.
I haven't tested which of the various brands dries fastest - they are all pretty fast and all should probably be allowed to dry longer than the minimum listed time to get the best finish coat. Note that original Mod-Podge - and at least some of the many variations that company produces now - will get tacky when exposed to moisture and probably should be sealed if you live in a high-humidity area.
I would only recommend an aerosol matte clear coat, if fast drying time is important: aerosol's will be partially dry upon contact with the object, plus they are carried by quick-evaporating solvents (producing plenty of fumes) -- use in good ventilation areas only! Another bonus for aerosol clear coats, is that they will not absorb into the cardboard, remaining upon the surface only, unless you soak the cardboard (not recommended...).
Any brush-on type of sealant will take time to dry: minimum of around 15 minutes, and that is for the quick-dry formulas... Brush-on clear coats will go on very heavy, and likely soak into the cardboard material, giving it a wet or stained look, even after drying completely.
A lot of miniature painters swear by Testor's Dullcote aerosol. I've used it sparingly, in the past. It is a decent product, and completely matte. They are all very similar in drying times. Pick what is available, and the lowest price, and you should be fine.
Note, however, that matte clear coats contain talcum powder, which makes them matte. If you get too thick of a coating, they will frost your work! This is not a complete disaster: spray it with high gloss clear coat, then, when that is completely dry, hit it with a lighter dusting of matte. A few light coats are better than one heavy coat. Cheers!
erho: I will once again rise above Lurker status if I ever get back to painting, Real life work transitions... Adulting
Jan 31, 2020 16:23:29 GMT
factoriatabletop: sgtslag...oh man! you are right about it...
Mar 3, 2020 10:13:15 GMT
Draklith: Hey everyone just a quick stop by to see if anyone is still here, hope everyone is doing ok
May 26, 2020 18:27:20 GMT
sgtslag: This forum seems to be slowing down. I hope everyone is still crafting, safely! I will be here until they turn off the power... Cheers!
May 27, 2020 13:46:43 GMT
factoriatabletop: maybe we should try to make a contest here, between us
Jun 2, 2020 8:40:08 GMT
factoriatabletop: no prizes, just proud....dont know, anyone else?
Jun 2, 2020 8:40:40 GMT
sgtslag: Still unpacking after moving in October... Too much stuff, crafting materials are mostly still in boxes. Weekends are busy with life, so little progress made. Getting the urge to push through, though, soon. I have several projects waiting...
Jun 2, 2020 20:14:39 GMT
erho: Yeah I'm down for a painting contect
Jun 8, 2020 14:28:59 GMT
sgtslag: Started working on making hills, which match my Tee-Time carpet I use for my "grass mat," on my gaming table, for big battles. Got two long chunks of open-cell foam, from a friend. Used my Proxxon Hot Wire Cutter to make terrain hills out of them.
Jul 26, 2020 20:12:40 GMT
sgtslag: Came up with around 80 hills. Covering them with the same carpet, from scraps. They will match the tabletop, perfectly. Contact Cement, is my friend. Will post on it, when I get the pictures uploaded. Some prototypes done, as proof-of-concept...
Jul 26, 2020 20:14:06 GMT
randywest: does anyone know more manufacturers for 1/72 fantasy minis besides Dark Alliance, Caesar and Elhiem?
Sept 14, 2020 14:16:19 GMT
sgtslag: 50 Hills completed, 24 left to cover the sides on. Hoping to finish this project within the week. Then I'll post a build description. For war gaming, but it can cross over to RPG sessions... They match the ground 'cloth', perfectly.
Sept 19, 2020 19:03:09 GMT
sgtslag: Sorry, randywest, the listed makers are the only ones I know.
Sept 19, 2020 19:03:34 GMT
sgtslag: Ran out of Hot Glue, with only five hills left to add a skirt to the sides of. Wal-Mart closes at 8:00 PM, thanks to COVID. GRRRrrr! Another 30 minutes of work, and I would have been done: ~77 hills, modular, perfectly matching my table's ground cloth!
Sept 23, 2020 2:50:39 GMT
sgtslag: Will post a write-up soon, or after next week's vacation. Cheers!
Sept 23, 2020 2:51:57 GMT
sgtslag: Hoping to acquire a Chop Saw within the next two weeks. Then I will cut up MDF into triangles, to form the skeleton of my d20 fantasy world globe... Posting will follow, with how-to guide. Cheers!
May 11, 2021 22:57:40 GMT
erho: I have a confession: I havnt painted a thing in months because I got a new guitar(#8!) but now that May "Megadeth month" is over I have a repaired airbrush and a early 90's Ral Partha Amethyst dragon on the table... pics to come soon!
Jun 11, 2021 17:49:58 GMT
margaret: too bad you can't post your music here =). Hadn't seen that dragon - looks like it came out when all my cash was going to raising kids. Looking forward to seeing your paint choices!
Jun 12, 2021 2:41:42 GMT