Morning all,
I am currently constructing a 3 part "bucket" mould to cast reproduction headlamp shells, the outside is completed having used a platinum cure rubber coated with a fibreglass support shell and is in 2 parts to enable easy pattern extraction.
I am now coating the inside of the mould with a platinum cure silicone to build up the thickness ready for the glass fibre support.
If i use all my platinum cure rubber can I use CS25 to build up the inside rubber thickness or is it not compatible with overlaying it on top of the platinum cure type material.

Regards Stuart