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More from ~Soynuts

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February 1
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:iconsoynuts:
I decided to write up a quick tutorial on how I make molds and cast objects from them.

I use Smooth-On products, but there shouldn't be any problem with using any other product. Just be sure to follow the instructions on the product of your choice.

If you have any questions, just ask!
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:iconhypercats:
*Hypercats Apr 2, 2013  Professional Artisan Crafter
That's funny, I use my dehumidifier that way too! Something in the compressor mounts is off, so it vibrates more than it should, and I stuck a penny under one of the wheels to make it shake even more. I have to tape mold boxes to it, or they end up spilled all over the floor. :(
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:iconsoynuts:
~Soynuts Apr 3, 2013  Hobbyist Artisan Crafter
haha ya, mine vibrates more than it should too. I've been considering building a degassing chamber to completely remove all bubbles from the silicone.
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:iconhypercats:
*Hypercats Apr 3, 2013  Professional Artisan Crafter
I use PMC 121/30 and pressure cast everything. I think it's cheaper to set up a pressure casting setup than a vacuum degassing setup. I'm running Harbor Freight hardware and getting crystal clear resin casting and bubble free urethane molds. Good luck trying to get an 18" inch mold in either a degassing chamber or pressure pot, though. :/

My setup: [link]
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:iconsoynuts:
~Soynuts Apr 3, 2013  Hobbyist Artisan Crafter
That was a good video. I can see how a pressure system would be cheaper, especially since I already have a 2hp 8gal air compressor. Though I should probably get some slower curing smoothcast since the 320 have has far too fast of a kick for me to get it into a compressor.

I'll def need to go to my local harbor freight and get me some parts though.
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:iconhypercats:
*Hypercats Apr 3, 2013  Professional Artisan Crafter
If you already own the air compressor, the pressure paint pot is the most expensive part. It's worth it for the kind of casting quality you can get.
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:iconsoynuts:
~Soynuts Apr 3, 2013  Hobbyist Artisan Crafter
Sounds and looks like it's worth it. It always annoys me having small tiny holes in my cast that I have to fill with bondo putty.
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:iconhypercats:
*Hypercats Apr 4, 2013  Professional Artisan Crafter
The other nice thing is that I almost never get air bubbles due to undercuts. You still have to have air holes and design your molds in a way that minimizes trapped air, but I can do small pieces that would normally have trapped air bubbles, even if you used baby powder and a vibrating table. The pressure casting just seems to work a lot better for forcing air out.
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:iconjennovazombie:
~jennovazombie Feb 2, 2013  Professional Artisan Crafter
OOh, this is very helpful!
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:iconsoynuts:
~Soynuts Feb 2, 2013  Hobbyist Artisan Crafter
Glad it is!
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:iconnuma-waffle:
~NUMA-WAFFLE Feb 1, 2013  Student General Artist
This is a lot easier than the way my one teacher explained it. XD
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