How to Make a Brush-On Rubber Mold of a Bust | Mold Making Tips

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Uploaded by on Apr 27, 2009

http://www.smooth-on.com/Sculpture-and-Art-/c1239/index.html for more about sculpture and art molds and castings.

Using Smooth-On's Brush-On 40® urethane rubber to make a brush-on mold. Then make a casting from the mold using duoMatrix® NEO® a polymer modified gypsum.

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Uploader Comments (SmoothOnInc)

  • You could use a pourable rubber such as our Vytaflex and allow that to 'flow' over the surface before following up with brushed-on rubber.

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All Comments (22)

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  • That was super cool!

  • Wow! That was amazing. I never knew that such a thing existed. I am very impressed with the entire casting process.

  • So this only takes 10 mins right? lolz I wish.

  • What is the difference between silicone and urethane rubber, what are the advantages of each.

  • Never mind, I didn't notice it said it, I'm an idiot

  • What kind of sealer did you use

  • @guysytaccount You should have longer than 5 minutes to work with the material. Urethane rubber is heat-sensitive, perhaps an elevated working temperature made the material cure more quickly.

  • WARNING: Brush-On only lasts about 5 mins before becoming too stiff to paint on for the first detail coating. I wasted 90% as I made a whole batch at once. You should only make a little (4cm part A + 4cm part B would be a conservative amount) at a time and continually make more as you go (40 mins between coats / batches!) I wish I had been told this in the instructions or videos!!!

  • This is great stuff!! Is there a mercury free version of this product?

  • Awesome!

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