just curious, i got a pack of this stuff earlier in the year, and i am having some trouble with it.
the casts, no matter size or shape, dye or no dye are coming out very tacky.
ive been mixing the resin 1:1 as it states, and heating the molds before i pour (again, as it states), but for some reason i cant escape the tacky.
any ideas on it? just once i would like resin to become a nice hard plastic as opposed to "sticky goo"
chris
Is it past it's expiration date?
I've been using Por-A-Kast Clear Cast for a while now, and after the quart containers had been sitting for a few months, I noticed my castings were taking days before they were completely tack free. Then I noticed the "B" part was getting "cloudy". Kind of little floaties and some crystalization. I took what was left and filtered it through a piece of fine nylon mesh into a new container. The next time I did a casting, they hardened up tack free in just one day.
Just my 2 cents.
nah, its still got about 8 months on that date iirc.
i did get some semi tack free castings, and fixed em by popping em in the oven at 150 for about a half hour. let em cool down and they came out water clear.
maybe its just to damned cold to play with the stuff...
chris
It may be too cold. I've never had problems with Alumilite's products. Their stuff is top notch.
How cool is it where you are doing your castings?
well, inside last night was about 60 or so, and outside was in the low 40s.
the best batch came out of a heated mold, poured inside, and then put in the oven a few minutes after it started to "kick".
it had to be the heat (or lack of it).
chris
Absolutely. Resin turns hard through a thermal reaction. If it's 60 degrees where you're casting, either don't cast or find a way to make the room warmer.
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