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| Keep your Whisky away from your Flame Polished Acrylic |
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| griffindodd:
You can anneal acrylic by heating it to 180f and then letting it slow cool |
| lilshawn:
I think the issue is that the flame messes with the internal structure of the plastic, setting up an uneven pressure zone on the edge of the plastic (A mechanical stress). the alcohol induces a CHEMICAL stress...since the edge of the plastic now has an uneven MECHANICAL stress area, the alcohol is just compounding an already stressed area. Once a craze is formed this creates a path so that the attack can continue internally and the crazing process accelerates. How chemicals induce a stress in plastics is still not fully understood, and it has been studied for decades! |
| griffindodd:
My sexiness induces stress in all kinds of materials. |
| Mental:
I never would have imagined that would happen. Thanks for the great lesson! I'll consider myself warned. :) |
| Mysterioii:
--- Quote from: lilshawn on September 21, 2012, 11:47:20 am ---I think the issue is that the flame messes with the internal structure of the plastic, setting up an uneven pressure zone on the edge of the plastic (A mechanical stress). the alcohol induces a CHEMICAL stress...since the edge of the plastic now has an uneven MECHANICAL stress area, the alcohol is just compounding an already stressed area. Once a craze is formed this creates a path so that the attack can continue internally and the crazing process accelerates. How chemicals induce a stress in plastics is still not fully understood, and it has been studied for decades! --- End quote --- My guess too, pretty much. Wiki "season cracking" and "residual stress". |
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