Mystery on vacuum casting turning white |
| Hi folks
Really enjpying my newest hobby with molding and casting but ran into a little mystery. I had built a vacuum chamber for my casting of some of my crystal clear resin to do away with bubbles. The rig I made seemed to cut back on bubbles quite a bit when I viewed the still curing resin, but once it cured entirely the casting had turned pure milky white. This is a new one for me to run into with the Crystal Clear resin and I wonder if anyone might have an idea why this occured?
Thanks
Bruce
PS: Thanks for the response on my jelling issue with this product - suppose since my workshop is in the basement where it is a bit cooler this would explain the gelling problem. But now I know what I need to do to fix this. |
Posted by Bruce L D. at 07:47:08 AM on Feb 4, 2010 |
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| Alumilite reserves the right to edit any and all questions,
responses, and comments for clarity and/or appropriateness. |
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| If you needed to "restore" the B side due to gelling there is a possibility the A side might have coagulated a little as well. Try warming it up using the same method you did for the B side and once it is warm, shake it well. There is a possibility a couple of the raws are more concentrated and is actually making the material phase or turn color when it cures. Lets first make sure the material is back to a nice homogenous mixture. Once you think you have it good and restored, try mixing an ounce of A and ounce of B and pour it in a little 1 oz medicine cup to watch cure. If you still have problems after this test, please give us a call and we'll see what we can figure out togehter.
Was there anything else you noticed while mixing the batch that seemed different when it turned the cloudy white ... swirls ... striations ... did it cure faster or slower ... or seem thicker or thinner than normal??
Mike Alumilite 800 447-9344 |
| Posted by Mike F. at 09:03:56 PM on Feb 16, 2010 |
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| I have not been able to reproduce this condition that you've described in resin we have here after intentionally freezing it for 2 days and then under mixing it. We simply can not get it to phase white. If the material is still doing this, please call us on Monday as I would like to get the material back to evaluate it.
We will send you new material and send you a call tag to ship it back to us on.
Thanks, Mike Alumilite 800 447-9344 |
| Posted by Mike F. at 08:42:29 PM on Mar 5, 2010 |
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| I made a box, a cooler, to keep the resins warm: got a 'reptile thermostat' and a 'heating pad' to maintain 85º . . . and it sure makes a big different. The pad is in the bottom, under a tray to catch potential spills, the thermostat has a thermometer inside and the controls outside so I can see the actual temperature. Also, put a 'booster fan' on the in-room furnace outlet & a ceiling fan to raise the temperate of my basement workshop to about 74º, that also helps (only good for in Winter, add a heater in Spring). |
| Posted by Glen P. at 01:32:19 PM on Mar 7, 2010 |
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