I have never used any mold making materials nor have I ever casted anything. However, I plan to. I always do TONS of research before I do anything so let me see if I can remember...
Originally Posted by VirtusMaster
I believe you can pour more urethane rubber on within a 24 hour time period (I THINK) It may be less, or longer. Urethane and Silicon do NOT mix. Therefore, it will not bond at all. If you pour Urethane inside a Silicon mold, you dont have to use a release agent (although it is recommended)
Because it is so expensive, I'd go ahead and try adding more urethane. Urethane bonds to Urethane. Silicon bonds to Silicon.
Hope this helps and I hope I'm not too late in helping!
I have my own question. Will Urethane PLASTIC bond to Urethane RUBBER? Or would it be fine with a release agent (Vaseline / cooking oil spray)
Edit: Didnt realize this post was months ago
Last edited by Spartan-010; 06-16-2012 at 06:52 PM.
If you're not trying your best, don't try at all.