Information on plaster diorama pieces

I've built several plaster buildings and have never bothered sealing them before painting. A sprayed on base coat of paint effectively seals them. Or prime them if you wish. Being plaster, they are porous and would soak up a lot of paint if you were just brush painting them.

Kykeon wrote:

I've built several plaster buildings and have never bothered sealing them before painting. A sprayed on base coat of paint effectively seals them. Or prime them if you wish. Being plaster, they are porous and would soak up a lot of paint if you were just brush painting them.

If you are brush painting these. Mix a very thin mix of white glue, water and a drop of windscreen washer fluid and brush this over the entire surface first. It seals the plaster.

If you are airbrushing you can prime it with a base colour and it will serve the same purpose but it will soak in fairly quick. So you may need a second primer coat.

Cheers;

Gregory

Thanks for the replies guys. That's a lot simplier than what I thought I had to do. My memory may be faulty, but I kind of remember half diluted polyurethane sealer. I rather just seal it with a paint primer, easier. From what you state I would think the rattle can of Tamiya fine gray primer would be sufficient.

Mike T.