Stoner mold release that leaves glossy, paintable surface on urethane?

[Galane]

Question for people using any of the Stoner line of mold releases. Which one works for urethane pressure casting in silicone molds and leaves a glossy finish on the castings, and can either be painted over or will clean off the casting so it can be painted?

 

[cavx]

Not Stoner but here is what I was sold when asking for a mold release that won't leave a nasty residue.

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[robstyle]

For future moulding of gloss surface parts, an easy and inexpensive cheat is to lightly coat the master part with Vaseline then hit it with a heat gun to thin and smooth it out to a micro thin coating, then pour the silicone. Every cast part will have a shiny surface by default.

 

[Inquisitor Peregrinus]

Also, are you using self-skinning urethane?

--Jonah

 

[Galane]

Smooth-on Crystal Clear

 

[MrGreene]

If you want your mold to make casts with a glossy finish, you have to clean the mold release off the master before pouring the silicone, or use a glossy self-leveling mold-release as stated above.

Any mold release you spray inside the mold for casting is going to impact the surface finish of casts a little. If you're painting or clear-coating the casts, just use Mann Ease-Release 200 and sand them before painting. If you need them perfectly gloss-clear right out of the mold, just cast them without spraying the mold with release.