What thins Mr. Resin Primer Surfacer?

DeltaVee · Post by **DeltaVee** » Sun Oct 04, 2009 5:44 pm

I need to remove Mr. Resin Primer Surfacer from a resin model. What can I use?

kenlilly106 · Post by **kenlilly106** » Sun Oct 04, 2009 7:22 pm

lacquer thinner

LT will strip resin kits w/o a problem in my experience, you're left with a very clean and degreased surface when finished.

Ken

DeltaVee · Post by **DeltaVee** » Sun Oct 04, 2009 9:19 pm

Thanks much. What would cause the surfacer to hit the model in splotches? I was in the garage. Outside it was raining. The can of surfacer had more in it but it was close to empty. I hadn't used it in a couple of months. I had washed the resin parts with 409 and scrubbed them. Any ideas?

kenlilly106 · Post by **kenlilly106** » Sun Oct 04, 2009 9:48 pm

Do you mean a spatter or pebbly-type finish?

Sounds like either not enough propellant or maybe there wasn't enough thinner left in the mix.

Moisture in the air might slow the cure time, and any surface impurities would usually cause curing problems too.

I'd say it was due more to the near-emptiness of the can more than anything else.

Ken

DeltaVee · Post by **DeltaVee** » Sun Oct 04, 2009 10:40 pm

Pebbly, puddley, I was surprised. Perhaps you're right. Perhaps not enough surfacer left. It seemed thin enough. I pre-heated the can in hot water to juice it up a bit.

Lt. Z0mBe · Post by **Lt. Z0mBe** » Mon Oct 05, 2009 5:24 am

DeltaVee wrote:Pebbly, puddley, I was surprised. Perhaps you're right. Perhaps not enough surfacer left. It seemed thin enough. I pre-heated the can in hot water to juice it up a bit.

Two thoughts:

1.) Too thin, which kills the binder holding the pigment together and thus allowing the primer "shell" to crosslink as it dries.

2.) It may (also) have been there was mold release present on the resin, preventing the primer from adhering properly. It will almost "bead" and look splotchy. I've done it before with casts I have made myself, and the result looked like gray ink on glass - nothing to grab to and it shrank as it dried.

I hope this helps.

Kenny

DeltaVee · Post by **DeltaVee** » Mon Oct 05, 2009 8:22 am

Thanks. It dried well enough as it turned out. I may do some light sanding and rewash before going back over with a fresh can of surfacer. I thought I thoroughly cleaned the model with 409 and scrubbed it with a toothbrush and rinsed with hot water. If there's mold release, it's heavy duty. On the other hand, the effect was somewhat...reptilian... and if I could reliably replicate it, I'd have to try it on a couple of other starships, robots, or armored suit figures.