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Post by goriddle on Aug 5, 2004 16:57:45 GMT -5
Any of you ever use paraffin to make positives from alginate? Obviously it has a really low melting point so I don't think it would hurt anything. The only problem I can think of is it running though opening in the mold. Let me know what you think...
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Post by Mommy's Little Monster on Aug 5, 2004 17:08:06 GMT -5
It might work, clean up on the face cast itself would be easier. I think it would work nicely if you didn't need the positive to go into the oven. If you are doing foam latex or something else that needs to bake it wouldn't work (obviously!). There is also the question of thermal cure products like plastics and polyfoams. These can get pretty hot and might melt the positive, i suppose testing would be required.
Oh and if you ever have a split or hole in your alginate you can fix it up with denture adhesive.
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Post by goriddle on Aug 6, 2004 11:41:15 GMT -5
It doesn't need to go into an oven or anything like that. I am actually just using it to make second negative out of plaster using the lost wax method. I figured the same-it would be easier clean up and is also cheaper than using clay. I just wasn't 100% sure that the cured alginate would work well with the paraffin in the case that it had a slightly higher temperature than melted clay.
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