Resin casting

[PaulCheffus]

Hi

 

A quick question.

 

When making masters for resin castings do you paint them to seal before making the silicone mould? My masters are made from plasticard and plastic mouldings.

 

Cheers

 

Paul

[Matt C]

My Mrs used to do some casting Paul and she gave me these two sites for you, one gives info, the other was the seal she used but this WAS on plaster not plastic

 

HTH

 

https://www.smooth-on.com/page/sealers-releases/

 

https://www.benam.co.uk/products/releases-sealers/sealing-agents

 

Cheers

 

Matt

 

 

 

 

 

Edited December 6, 2020 by Mattc6911
Typo

[jonhall]

probably not required for plasticard, but a layer of primer might help show up any minor imperfections that require rectification before replicating them in the mould

 

Jon