MDF Sealer through airbrush?

[Sir Clausel]

Im considering getting some MDF terrain and you have to seal it so I thought the quickest method would be through the airbrush but i cant find any info on it.

 

Have any of you tried it and did it work?

[Bung]

I Just use thinned wood glue andca big brush.

[andes]

Similar to Bung, I've used Mod Podge and a biggish brush. I think the job would be too big for a hobby airbrush, easier with a 2" bristle brush.

[Sir Clausel]

Thank you for the replies guys. But i might need to rephrase my question.
 

Can you use MDF sealer through an airbrush? Most of them seems to be waterbased. So i guess they can? But again I havent seen anything on it.

[Arkhanist]

Actual MDF sealer (as well as watered down PVA) tends to be moderately gloopy stuff; you could try it, but I don't think a normal airbrush is going to have the pressure to pull it off without drastically watering it down, you'd want something like a wall sprayer with a much heftier nozzle.

 

Sealing MDF properly before priming will definitely make it easier to get a good finish, and is recommended.

 

One alternative is a oil-based enamel or lacquer varnish - that also does a good job of sealing mdf for painting. Do several thin coats. Enamel varnish is easily available in rattle cans or you can thin it to use in an airbrush; I've heard good things about Mr hobby GX100 thinned (substantially) with Mr Levelling thinner for airbrush sealing gundam models, so it should work similar for MDF terrain. If you have any dullcote spray, that is also lacquer based and will give a matt finish.

 

As an oil-based product, similar to enamel paints, it's strongly advisable to have good ventilation and PPE such as gloves and a organic vapour rated respirator, especially if spraying indoors.

[Marshal Mittens]

I use mod podge as well

[Sir Clausel]

Actual MDF sealer (as well as watered down PVA) tends to be moderately gloopy stuff; you could try it, but I don't think a normal airbrush is going to have the pressure to pull it off without drastically watering it down, you'd want something like a wall sprayer with a much heftier nozzle.

 

Sealing MDF properly before priming will definitely make it easier to get a good finish, and is recommended.

 

One alternative is a oil-based enamel or lacquer varnish - that also does a good job of sealing mdf for painting. Do several thin coats. Enamel varnish is easily available in rattle cans or you can thin it to use in an airbrush; I've heard good things about Mr hobby GX100 thinned (substantially) with Mr Levelling thinner for airbrush sealing gundam models, so it should work similar for MDF terrain. If you have any dullcote spray, that is also lacquer based and will give a matt finish.

 

As an oil-based product, similar to enamel paints, it's strongly advisable to have good ventilation and PPE such as gloves and a organic vapour rated respirator, especially if spraying indoors.

Thank you very much for this response! This was exactly what i feared the sealer would be. So i will have to use a brush or find a lacquer varnish.