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Post by toeslider on Apr 9, 2016 10:09:33 GMT -5
I see both methods mentioned, are there any benefits or drawbacks to one over the other? Will applying pressure instead of vacuum still get rid of bubbles in resins? I'm thinking more people have access to a compressor than a vacuum pump (unless a vacuum cleaner or shop-vac can generate the appropriate amount of vacuum and be pressed into service). My air compressor already has the appropriate controls to maintain a set pressure.
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Post by carol - Alumilite Corp on Apr 12, 2016 9:25:13 GMT -5
Toeslider,
I don't know so much that one way is actually preferred over the other, I hear and see pro's and con's of both ways. Sometimes it just comes down to your application, the resin you are using (it's viscosity) and/or budget for equipment. If no bubbles can be accepted optimally it would be good to do both (if equipment is available). Vacuuming after mixing materials by hand pouring into your mold then pressuring to make sure the resins are pushed into all parts of the mold. (If you are going to use pressure it is important to degas your silicone when making your mold.)
Yes applying pressure typically gets rid of the bubbles the same as vacuum.
Regards,
Carol
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