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I always give my sprues a wash before assembling my minis, but I realized that assembling them is probably getting finger grease on them. Should I rewash them again before priming?

You don't need to wash your sprues before assembly, but removing skins oils from them after assembly and prior to painting is a must in my opinion.

I use rubbing alcohol and and cotton swabs to do it to my models.

Ive never washed plastic sprues and they have always been fine, resin definatly has to be washed

Find plastic is generally fine, though I make sure to wash my hands before building them to keep skin oils to a minimum.

I've never washed a plastic model in my life and it has never been an issue for me.

willb2064 wrote:
I've never washed a plastic model in my life and it has never been an issue for me.

Same here. I do know that resin stuff needs to be washed, though.

Unless you're a greasy mechanic or you assemble models while eating drippy pizza...don't bother. They're toy soldiers for wargaming. If you're doing high dollar commission work and you want some extra security? Sure.

Just paint em bruv.

My first thought at seeing this was..."wait I'm supposed to wash them?"

I guess you could wear disposable gloves to assemble and paint, it would make sense if you were using airbrush. Other reason might be if they sat around for a while and had dust particles that could ruin your painting.

 Elbows wrote:
Unless you're a greasy mechanic or you assemble models while eating drippy pizza...don't bother.

Some people just naturally have more oily fingers, so for people like that, it's a good policy just to wash them after assembly or wear gloves.

As for washing before assembly, it entirely depends on the models. If we're talking about plastic models from GW, I've never noticed them to be a problem. But if we're talking more generally about plastic kits, not just from GW, I've most definitely bought some plastic model kits that have a greasy film of mould release on them and if you don't wash them before assembly the paint will not stick to them (you can of course wash them after assembly, but it's just so much easier to dunk the sprues in a bucket of warm water and give them a scrub with dish soap and a tooth brush before even clipping them out than it is to try and wash grease out of all the nooks and crannies after it's assembled ).

A) Yes, always wash resin prior to assembly. If grease kills paint adhesion, it does the same to glue.

B) Unless you're eating greasy stuff or touching your face, you're fine. Just wash your hands prior to assembly and you don't need to worry. Or do gloves if it still worries you.

Never washed a plastic model before or after assembly and never had an issue in 15+ years. That said, if you have some condition that produces a lot of oil on your skin...maybe?

The primer will cover regardless.

I've never washed a GW plastic mini, but AllSeeingSkink's post about other manufacturers reminded me of some problems I had with Super Dungeon Explore miniatures, many of which had a lot of mould release still on them.

So I suppose there are occasions when washing plastic minis is a good idea.

I've never washed a plastic model, but no matter what I'll always wash a resin one to be sure.