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Post by jsabah on Mar 6, 2022 14:17:04 GMT -5
I’d love some advice to improve this pour. The fill spout was the center and I had 3 vents. The mold is detailed and fine but I’m having issues with getting a complete fill ((next to the pour spout), and some bubbles. I expected I may have difficulty with the edge but it actually didn’t come out too badly but the bubbles in the center (especially the larger one) was a surprise. Pour was very slowly and in fact difficult as the spout kept getting stopped and I had to wait and/or give it a little push with a stick. Material being used is High Gloss Amazing Clear Cast (colored with black dye). It seemed thick for the job. I followed instructions very carefully including the tips. How can I improve this? Here are pics of my mold and the piece I made. Sent from my iPhone    |
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Post by jsabah on Mar 6, 2022 14:22:27 GMT -5
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Post by notoes on Mar 14, 2022 8:13:12 GMT -5
One thing you can try is adding a bit more - these are what I usually call "drips" of resin as you are literally dripping tiny amounts of resin with a toothpick or brush then letting them cure on an already cured piece. This is how I fix bubbles on my cured resin castings.
Another thing to try while casting is "burping" the mold (pushing in and letting go on the mold) while you pour the resin in.
Also did you "degassed" the resin before pouring? Sometimes that helps too as those do look like air bubbles that were trapped during casting. Degassing doesn't completely remove all bubbles but it does minimize them.
You said the resin was a little thick during the pour so maybe it needed a little warming while in the bottle before mixing. Sometimes the resin in the bottles aren't as easy flowing as they should be due to getting a little cool during storage. This is usually fixed by just sitting the bottles (tightly capped) in a container of warm water for a few minutes before measuring and mixing. Or by rolling the bottles between your hand (if they're small enough to) before measuring - doing this also helps to be sure each bottle is remixed and nothing has settled on the bottoms during storage. Like how we say to give the RC-3 a "shake" before pouring or to stir each side of the Plat tubs before measuring and mixing.
I hope these help.
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Post by jsabah on Mar 14, 2022 23:28:57 GMT -5
I added some vents and enlarged the pour spout a bit. As I mentioned the first resin I used was thick (it was not cold) and I had let it sit to degas. I have changed the choice resin to Alumilite AlumiRes (RC-3). It is thinner and pours easier. I also tipped the mold a bit so that one of the vents was at the top. The subsequent pours came out good (except for some pinhead spots discussed on another thread)
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Post by notoes on Mar 15, 2022 12:18:49 GMT -5
The RC-3 worked better for you? That's good then.
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