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Post by arkman on Dec 18, 2017 15:58:41 GMT -5
Hey guys. I'm new to this world and was looking for some advice. I just go myself a 3d printer for some projects I've been wanting to do for a while. I think they will also lend themselves to casting. Basically I want to print one part and then cast the same part over and over. Check out this project (not mine but i'm going to do it).
My question is some of these parts look like the might have some edges that will be tough to get them out of the mold, but I don't know for sure. Each tile is pretty small so the overhanges/edges aren't huge but relative to the size of the model they are kind of big. I will have to make some changes as there are parts that the liquid mold will flow through and I won't be able to get it out. Mostly the trees. But how about some of the others? How much of an overhang is ok before I can't demold this. Any other thoughts you guys have?
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Post by Brian on Dec 18, 2017 21:02:17 GMT -5
....I didn't see any major issues with what you are wanting to cast.....I would use HS-3 RTV rubber as it has plenty of give where de molding and the over hangs/edges are concerned.
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Post by notoes on Dec 20, 2017 9:30:41 GMT -5
You could also make two piece molds as that would make them easier to pull out the casting. And personally, I would use Amazing Remelt instead of clay when you cast the halves because it is very easy to remove and there's little to almost no clean up of the original when you pull it off of the original. Clay is messy when having to clean it off of an original (for me at least) and remember that if you do use Remelt, spray it with a mold release for silicon. I use plain old cooking spray and it rinses right off the Remelt when I'm done. Have fun and post pictures when you get some castings done so we can see how they came out.
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Post by carol - Alumilite Corp on Dec 22, 2017 7:48:47 GMT -5
Notoes,
Thank you for that information on the remelt, a wonderful alternative with a lot of benefit. I have told people here about it and we are going to test that process. Thank you again and a very Happy Holiday Season to ALL of our WONDERFUL Alumilite, Amazing Crafting Products, Make Lure, and Make Hand Holds customers we appreciate you, we really do!
Warmest Regards,
Carol
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