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surfreak



Joined: 12 Nov 2007
Posts: 2

Posted: Thu Nov 15, 2007 4:23 am    Post subject: Homemade balls

I found this site on making acrylics with a casting resin:

http://nashvillebirthpartners.com/mbb/juggling/acrylicballs.html

Don't go monkey on me yet.

So, the problems with casting clear acrylics are obvious- any bubbles or slight imperfections readily show in the finished product. I'm thinking about making an opaque ball. That way, it doesn't matter if there are (hopefully small) bubbles in the ball, they won't be seen (unless, of course, they're on the surface, but those can be touched up). Andy mentions in the site that acrylic paint works.

With that said, any ideas about polyester or vinyl casting resin? It's much cheaper, but also more toxic. I haven't been able to find a comparison on the densities of poly vs. acrylic yet, so I don't know how this would affect the weight. Ideas, suggestions?
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he4rty



Joined: 08 Nov 2007
Posts: 77
Location: England

Posted: Fri Nov 30, 2007 2:39 pm    Post subject:

Just trying to think back to the college days, but I'm sure not certain that if you could vibrate the mould very quickly this would reduce air bubbles. Or tapping the mould on a work surface, it works with chocolate.

"Tap the filled mould on the counter to settle the chocolate and release any air bubbles."
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Drew



Joined: 29 Jun 2004
Posts: 1014
Location: Bristol UK

Posted: Fri Nov 30, 2007 3:29 pm    Post subject:

vacuum casting
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