Hi, Folks....whereas this topic has come up many times, but I cannot seem to note a missing key aspect, I thought I'd go again. Many brands of resin, after a time, will show hardness at the bottom of the putup. I usually microwave, to re-liquify.

However: (reason for today's post) is it necessary, chemically, to re-incorporate ALL the solids that have presented themselves after storage periods, or: is it acceptable to just get it liquid enough to mix with the hardener.

I normally warm it to the degree all the solids have re-liquified. But, the downside to that is the temp the resin winds up to. I need to let it cool down a little so when I tip the "york" lid, it does not squirt all over me, and the workplace.

Thanks in advance for input. KD.



Edited 1 time(s). Last edit at 09/18/2010 03:03PM by Ken Driedger.

Rather than microwave I immerse in hot water then shake it up - I don't know if shaking is necessary rather something I just do automatically. Fact is I often warm both parts of thread epoxy (resin and hardener) to get it to a lower viscosity (thinner) because I think this penetrates the thread better. Obvious "down sides" are that it will harden faster and you will likely need a second coat if you what a thick, glossy finish. If you apply at high speed this is not an issue because each guide should only take 10 seconds (or less)

Epoxy will crystalize over time or if it gets really cold. You can put it in the microwave or warm the bottle in warm water (my preference)

You can let it cool down. It won't re-crystalize for some time afterwards, perhaps weeks or months.

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Thanks, gents, but the question remained unanswered. If I were to use the resin which had one inch of solids on the bottom, and liquid above, will I still be chemicaally viable. The resin (Threadmaster regular) had 3/4" of what looked like white solids on the bottom, and liquid
above. At the Canadian pricing for this product, I was not ready to experiment and use the resin without warming, and getting rid of the suspected solids on the bottom.

Yes. You could do that and be fine.

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Hello to All

Tom does that mean that you can use it down to the solid part, and then heat it to use the part that has become solid?


Thanks.

Bob,

New Bern, NC.

I would make sure it is well mixed before using. Boil water, take off the burner place the bottles in for heck it should only take 10 mim. Don't put them in the water as it boils. You will melt the bottles. Been there.

Have no idea what you will get if not mixed ??

Bill - willierods.com

You can, but if you look carefully, you're apt to find that once the resin starts to crystalize, there will be more than just a lump at the bottom. You may see small white flakes throughout the mix.

For that reason, heat it until it all returns to normal and then store it in a cool place (not cold). It should take several months before any more crystalization begins anew.

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Hello All

I have 2 quart bottles I have not even opened that are hard as a rock on the bottoms.(been stored quite a while).

Thanks Tom.

Bob,

New Bern, NC.

I've always warmed the product, to re-liquify, then waited a bit, to permit the product to regain some viscosity. I store the product in the kitchen in the cupboards above the fridge, so they catch come latent heat off the compressor, along with room temp.

Tom's bang-on RE: product remaining liquid..I recently bought some Great Planes 45 minute epoxy that was bottom-solid when I bought it, for those quick threadwrap repairs. I heated it and it's been liquid for some months now. Thanks to all. KD.