Metallic Powder in Urethane Rubber

RockitScience

Active Member
Hi RPF!

Has anyone had any experience adding metallic cold-casting powders to urethane rubber? Smooth-On claims it can be done in conjunction with so-strong tints in their UreCoat product, but I'd like to know if anyone's actually tried and had success with that or any other brand. Thanks!
 

Zinger

Active Member
Following. I want to try using cold-casting powders with urethane foam to make a light weight prop dagger.
 

TJack

Master Member
Community Staff
RPF PREMIUM MEMBER
Yep, here's an example of a webshooter I did in vytaflex 40 rubber, back filled with foam

IMG_4624.JPG
 

PropReplicator2

Sr Member
RPF PREMIUM MEMBER
That’s crazy.. TJack did you coat the surface of the mold with the metallic powder first like you would do when cold casting resin, or did you just mix the powder into the rubber?
 
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TJack

Master Member
Community Staff
RPF PREMIUM MEMBER
That’s crazy.. @TJack did you coat the surface of the mold with the metallic powder first like you would do when cold casting resin, or did you just mix the powder into the rubber?
Yep, dusted the mold with the powder and then did a couple layers of black tinted rubber. Then I back filled that with the foam
 
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