HI, I'm curious if it shrinks alot when curing, you'd be able to tell on a thick application little cracks would appear after full cure.
Not really. The thing to remember is that this isn't actually "green stuff", it's just a convinent marketing name. It's more like an extra thick acrylic paint with a hardner. it skins up like acrylic paint and then sets up hard.
Also do you need to do more than a alcohol swab surface prep to get good adhesion, like a lite sanding prior to gooping it on ?
If it's clean enough to paint upon, it's clean enough for LGS. Just understand that this is gap filler, not a bonder. It'll stay where you put it, but it won't hold stuff together.
And is it compatible with most primers ?
Krylon, Wal-mart cheap stuff, Rustoleum, GW and Armoury brands seem to work just fine.
I didn't thought to use brushes to lay dow the liquid green stuff anyway
It's really the best way. The stuff a bit too thin to easily coax with paddles and waaay to thin to use picks with until it's started to setup.
I don't want to risk a brush that cost 5€ each when is still in mint condintion.
I understand. I was hesistant at first, but eventally ended up using both my main brush and my fine detail brush and given what the euro is doing vs the USD right now, I guess they are 5 euro brushes.
-Jackmc