Alumilite post cure?

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biednick

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Jul 13, 2010
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333
Location
Hamilton, Ohio
Hello,
Is there any way alumilite can be post cured? I have a blank that's been in the mold almost a month and still has a rubber like texture.I would really like to save the blank, and I don't know if you can post cure alumilite, so I figured I should ask.
Thanks,
Nick
 
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You can try putting it in a toaster oven at 150°F or so and it might help. However, if you have a rubbery Alumilite blank, that means you did not mix the resin properly or had the wrong ratio. Make sure you measure by weight and not volume and mix THOROUGHLY. Clear plastic cups are best for mixing so that you can see what is going on while mixing. Mix the 2 parts BEFORE adding any dyes and mix until they are completely clear with no streaks. THEN add your colorant.
 
shouldn't need a post cure.. sounds like an improper mix. (possibly wrong
ratio) Post curing is usually for making the surface of PR less sticky.
Alumilite doesn't work quite the same as PR. but I don't think post curing
would do anything for the blank. At this point it couldn't hurt, though.

Ah.. Curtis got it.
Just a note on this.. because it seems to confuse people..
When measuring by weight, you can't do it by eye. Many people think that you
can fill a container up to .. say, 8 fl ounces and it will weigh 8 ounces. But that's
not necessarily true. FLUID ounces are NOT a measure of weight. It is a measure
of VOLUME.

If you measure out 8 fl oz of water, it will weigh 8.344 ounces.
If you measure out 8 fl ounces of gasoline, it will weigh 5.90 ounces
 
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My post curing of Alumilite was due to thin sections because of design. My belief is that the heat generated from the reaction of parts A & B is not achieved for a full cure. Heating the material aids in the curing somewhat if you follow the directions mentioned by Curtis.

Dave
 
Bellsy said:
My post curing of Alumilite was due to thin sections because of design. My belief is that the heat generated from the reaction of parts A & B is not achieved for a full cure. Heating the material aids in the curing somewhat if you follow the directions mentioned by Curtis.

Dave
Click to expand...

You are correct in thin sections. Alumilite even recommends post curing at 180°F when doing thing pieces since there is not enough heat generated by the chemical reaction itself for full polymerization.
 
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