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Thread: Some cast bowl blanks
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30th June 2017, 06:31 PM #1
Some cast bowl blanks
I cast a couple of bowl blanks yesterday, a 200 dia x 120 mallee and 120 dia x 60 sea borer eaten red ironwood (old wharf timber), both in some bronze coloured mica powder filled resin. When you cast mica (e.g. Pearlex) in resin you can never see what it looks like until you turn/sand it and thought this was a perfect example.
Unsanded sides, ho hum
bowl blanks unsanded.jpg
Sanded top face (and a quick coat of lacquer), boy did it pop
bowl blanks sanded.jpgNeil____________________________________________Every day presents an opportunity to learn something new
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30th June 2017, 08:33 PM #2SENIOR MEMBER
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I like the effect of the resin tint Neil. Would really like to see the finished bowls.
TonyYou can't use up creativity. The more you use, the more you have. ~Oscar Wilde
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30th June 2017, 10:18 PM #3
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1st July 2017, 09:02 AM #4SENIOR MEMBER
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Beautiful Neil!
What did you make the mould out of - was it a big silicon block mould (wish silicon was cheaper!), or something clever?
Cheers,
Danny
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1st July 2017, 08:18 PM #5
The large one was a small plastic bucket from the $2 shop (clear with yellow push on lid) that fits in my smaller pressure pot perfectly with a 2" freeboard (but I do have to take the handle off). It has a small taper on it and the epoxy doesn't stick to it so the cast comes out easily.
I could fit a larger bucket in my big pot, there is one from my local tiler's that even has a silicon liner, but the pot is set up for horizontal positioning with a shelf siliconed in, so I'd rather not remove it.
The small one was a plastic screw top container (again from the $2 shop) out of a similar plastic material that the epoxy doesn't stick to.Neil____________________________________________Every day presents an opportunity to learn something new
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1st July 2017, 08:54 PM #6SENIOR MEMBER
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Neil
When it comes to turning a casting like this I have read somewhere that carbide cutters are a good option due to the hardness of the resin. What tools would you use to turn one of these blanks? Would you use a bowl saver on the larger blank?
TonyYou can't use up creativity. The more you use, the more you have. ~Oscar Wilde
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1st July 2017, 09:02 PM #7
Yes I mainly use TCT tools. It is not just the resin is hard, the timber is also hard and abrasive, and then the two combined makes it even more hard/abrasive on the tools. On my pepper grinders I even have to sharpen the TCT tools.
I could use a bowl saver, but at this stage, I'm thinking of cutting it in half to make 2 shallow bowls/plattersNeil____________________________________________Every day presents an opportunity to learn something new
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