discussion Modroc

[Stingray33]

What do you use to cover modroc , just paint it or any concoctions?

 

[PaulTRose]

Erm.... Wots modroc?

 

[Stingray33]

Sorry, its plaster of paris

 

[PaulTRose]

Aaah....... I just use cheap acrylics from the hobby shop..... Cis they are so cheap, water dilutable and easy to mix custom colours

 

[Tim Marlow]

I would add some PVA into the water you use to activate the modroc. It will toughen up the shell and stop it flaking. I use PVA in any plaster I use for gaming bases for that very reason. Blast from the past this though, haven’t heard of it being used for years. I think it started out as plaster of Paris bandage in the medical arena and was repacked for railway modellers.
I use household emulsion on mine, by the way.

 

[John Race]

I would add some PVA into the water you use to activate the modroc. It will toughen up the shell and stop it flaking. I use PVA in any plaster I use for gaming bases for that very reason. Blast from the past this though, haven’t heard of it being used for years. I think it started out as plaster of Paris bandage in the medical arena and was repacked for railway modellers.
I use household emulsion on mine, by the way.

Remember whensome years ago Tim I added hot water to some plaster and it went off so quickly !

 

[Tim Marlow]

It’s like the crap builders trick of mixing plaster in dirty buckets to make it go off faster and save time, anything to accelerate the reaction.

I remember as a fresh faced lad straight out of school I was asked to mix 10kg of sodium hydroxide pellets in a quantity of water. I was getting towards the end of my shift so thought I’d use hot water to speed up the job. Trouble is, I’d overlooked the vital fact that when you dissolve sodium hydroxide pellets in water, the reaction gives off quite a bit of heat. In no time the water went from hot to boiling and I was left with a sodium hydroxide volcano to deal with….very late home after that.