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Resin Addict Forum • View topic - Casting Tips and Tricks Compilation
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Casting Tips and Tricks Compilation

Tutorials and resources. Beginners start in here!

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Casting Tips and Tricks Compilation

Postby mangozac » Tue Dec 06, 2011 8:04 pm

Oh yeah I can make that....
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Re: Casting Tips and Tricks Compilation

Postby Anvils Hammer » Tue Dec 06, 2011 10:45 pm

HPDE is also non-stick, but not as rigid as acetal.

This is my prefered UK plastics supplier and the product in question-

http://www.directplasticsonline.co.uk/Acetal_Sheet.html

Tip-

Finding the line and splitting a two part mold can sometimes be a pain, even with mold release, smear a very thin layer of vaseline along the top edge of the mold (not the bottom as it could cause leaking) to ensure you can find the line and pull the mold apart instantly with no hassel. Even lazier method- put a "tab" of sellotape on one corner of the mold before pouring the second half!
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Re: Casting Tips and Tricks Compilation

Postby mangozac » Wed Dec 07, 2011 7:28 am

I like the tape idea best ;)
Oh yeah I can make that....
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Re: Casting Tips and Tricks Compilation

Postby Eltnot » Wed Dec 07, 2011 10:16 am

I found that spraying the sides of the first half before placing it in the mold box also achieved a similar result.
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Re: Casting Tips and Tricks Compilation

Postby Hiflt4@juno.com » Mon Jan 30, 2012 10:48 am

Mann release 200 arasol
great job on the mold and takes a long time to build up enough to cause flashing, but fairly annoying to remove from casts *toothbrush and simgle green*

I got a small toster oven with a temp control at a sears outlet store for 20$. its great for bakeing molds with silicone oil.

where as before i would get 20-25 good casts from a mold before i would start to have problems in the undercuts. Cleaning and oiling every 5 casts and cleaning oiling and bakeing every 10. I have molds that are on 50 casts and still going strong.

for a 20$ oven, a 1$ toothbrush, a 10$ jug of simple green, and 25$ of sil oil *which will last me a long long time. doubleing the life of my molds is totally worth it.
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Re: Casting Tips and Tricks Compilation

Postby Anvils Hammer » Mon Jan 30, 2012 9:14 pm

but... cost of mold versus cost of time..

For me.. the value of my time spent oiling/baking/cleaning mold release is far more than the cost/time of the extra mold..

20-25 casts is pretty low..

My current rubber Ive recently started using is up to 30 casts with no sign whatsoever of mold degradation.

Thats with a PU fast cast and no mold release at all.

AH
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