I've been trying to paint my little lead soldiers for a few weeks now, but I keep running into the same problem: the acrylic paint cracks after it dries, especially on areas that move a bit. I'm using a gray primer undercoat, but it doesn't make any difference. What's the secret to making it actually stick?
I've noticed that cracking often comes not just from paint adhesion or rigidity, but from layer thickness - you're probably applying too much paint at once trying to get good coverage. Try doing several very thin coats instead of two thick ones, that gives you the flexibility you need without the paint cracking. One thing people often forget: after priming, quickly do a light sand with very fine paper (like 400 grit) to create a micro-texture - it helps the acrylic really grip instead of sliding off the smooth primer surface. And if you can, seal everything at the end with a light matte varnish, it protects and gives extra flexibility to areas that are going to move around.
What acrylic brand are you using, and how many coats are you putting on? 🎨 The thing is, regular acrylic paint is often too rigid once it dries - it cracks as soon as the figurine moves a bit. Try paints specialized for miniatures (like Citadel or Vallejo), they have better elasticity. And most importantly, apply lots of thin coats rather than one thick coat - it cracks way less. After it's completely dry, you can also seal everything with a flexible varnish (not a hard varnish that'd make the problem worse), it protects and keeps some flexibility.
# The real problem is you need to properly prepare the surface before painting. Cracking usually comes from poor adhesion between the primer and the lead, not necessarily from the paint itself. Before your primer, you need to clean your figurines with soapy water to remove any mold residue and grease, then let them dry completely. After that, light sanding with fine paper (like 220-400 grit) really helps with adhesion. It's a pain but it makes all the difference.
Once it's well prepped, apply your primer in very thin coats rather than one thick coat. Really wait for it to dry between each coat - not just a few minutes. Then, for the acrylic paint itself, it's important not to apply it too thickly either. Two or three thin coats are better than one thick coat that'll crack as it dries. And if you put a protective varnish at the end (matte or gloss depending on your preference), it seals everything and prevents cracking when the joints move around a bit.
About what people say on acrylic rigidity - it's true it's less flexible than oil, but with proper prep and thin coats, you shouldn't have issues on lead that's moving. It's really the foundation that makes the difference here.
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