incog
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Posts: 1
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Post by incog on Dec 24, 2015 13:27:02 GMT -5
I have a 3D printed replica of an original, laminated part that consist of three layers. I only need to mold the outer two layers of the original part. The 3D printed part is one piece, no layers and therefore I cannot cut away the thickness of the outer two layers. The two finished layers are different from one another. Is it possible for the Plat55 to mold to the part, if the part is elevated say, a half inch off the surface? I would simply pour the Plat55 up to the point where the layer would stop on the original part. I cannot mold the 3D part by gluing it to the surface as shown in the videos, as this will create a mold of the entire part. Thanks in advance.
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Post by mike on Dec 30, 2015 9:08:15 GMT -5
Couple issues ... Platinum base silicones "sometimes" inhibit against 3D printed parts depending on the SLA resin that was used. Plat 55 typically does not as it is very inhibition resistant however I would recommend doing a small test against it before pouring the entire thing just to make sure.
Secondly, Yes ... in theory your process should work great ... the only thing I worry about is the bubbles you mix in will float up to your part and may land/lay against your part giving you a ton of air bubbles on that surface of your mold. I understand that you can not do it but that is why we put the part down and pour the rubber over top ... so the air bubbles float up and away from the original rather than toward the original.
Do you have the ability to degas? If you do, it will more than likely work fine. Without it, I'd recommend we keep thinking about how we can pour it and not have air rise up to your part.
Mike
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