Prop Resin Casting Question For The Experts...

I'm molding & casting a scratch Trek prop replica soon, these are the best materials according to my research-

Smooth On ReoFlex 30 for the mold & Smooth-Cast 305 for the cast.

I've had extensive experience with plaster & latex molds & casts, but my resin experience is limited to small clear castings.Any input would be EXTREMELY welcome.

For serious parts on our resin E-11 Blasters; magazines, Scopes & Hengstlers

"Alumilite" Quick-set RTV for the mold & Aalumilite Low Viscosity - Super Light liquid casting plastic.

+It sets HARD and gets all the tiny little details.
+De-molds in 30 minutes, but I usually let them set 1 hour.
+TUFF stuff, I've droped pieces on concreat and they were fine.
+NEVER have any problems with bubbles.

-Cup time is a tad above 1 minute...I don't care WHAT "they" say, I pour this stuff every day and that's what it REALLY is. 30 secound stir, 30 secound pour.

Thanks for the input!

I'd go with silicone instead of the Reoflex. Casting urethane into a urethane mold will require using generous release.

Jonny B said:

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For serious parts on our resin E-11 Blasters; magazines, Scopes & Hengstlers

"Alumilite" Quick-set RTV for the mold & Aalumilite Low Viscosity - Super Light liquid casting plastic.

+It sets HARD and gets all the tiny little details.
+De-molds in 30 minutes, but I usually let them set 1 hour.
+TUFF stuff, I've droped pieces on concreat and they were fine.
+NEVER have any problems with bubbles.

-Cup time is a tad above 1 minute...I don't care WHAT "they" say, I pour this stuff every day and that's what it REALLY is. 30 secound stir, 30 secound pour.

Sounds interesting

I'm casrting E-11 parts in smoothon 300 or 305 I cant think which one right now, but get heeps of bubble problems

might look into that stuff you mentioned!

Based on my experience with Smoothcast 305, I'd say stay away from it. It was one hell of a moody resin. Too unpredictable.

Smoothcast 300, on the other hand, is the best resin I've used, and it is one of the industry's favorite. I've used it for 8 years, and I'm very happy with it,

GuntahKela said:

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Based on my experience with Smoothcast 305, I'd say stay away from it. It was one hell of a moody resin. Too unpredictable.

Smoothcast 300, on the other hand, is the best resin I've used, and it is one of the industry's favorite. I've used it for 8 years, and I'm very happy with it,

Moody is bad- thanks so much for the tip!