Chavant and plaster sticking question

[TK7713Gra30]

Hi all
I am making some buildings for my fathers railway. Gauge 1
They will be made in resin.

For the master I am rolling chavant and embossing the stonework, on top of this I will pour plaster (retained in a box) and once removed and refined/extra details added, this will be the master. I will then make the usual moulds etc.

Please can anyone tell me if chavant sticks to plaster or what I can use to prevent the plaster sticking.
Many thanks

 

[darthchiro]

It will be ok without a release, but you can spray a light coat of krylon crystal clear over the clay to seal it and it will make it easier to demold.

 

[CustomPropSculptorGuy]

It will be ok without a release, but you can spray a light coat of krylon crystal clear over the clay to seal it and it will make it easier to demold.

Just add a few coats to be safe... then hit it with some Pam in aerosol...

Ok I'm kidding there -

But are there any undercuts anywhere??