Mercury Adhesive 30 Minute Epoxy

This is for the 30 minute epoxy!I have purchased this epoxy a few times, and when I pulled it out a few days ago, the hardener in all 3 of my boxes was white and hard. Knowing that epoxy becomes more 'spreadable' with heat, I put some water in the microwave for 3 minutes in a pyrex mixing cup. After it was hot, I placed the bottle of hardener into the cup and let it sit for a while. The hardener eventually became liquid again and was usable. One note - do not use the epoxy while the hardener is still warm - makes it hard to spread and use - especially if you are used to a stiffer product.I am not giving this 5 starts, for a few reasons.Cons...1. Two of the bottles of hardeners there was a crack in the lid, which would leak when the sides of the bottle were pressed. I haven't used the 3rd one yet - so I can't comment on that.2. Add details to the packaging about the hardener hardening in the bottle.3. I used Bob Smith epoxy before this & loved the fact there are graduated measurements on the side of the bottle. Doesn't sound like much, but would be a nice visual clue as to how much you used.Pros1. Better pricing than others.2. Comes in 5, 15 and 30 minute options.3. Love the size.

I purchased this product for a radio control plane project. Product arrived and the resin was crystallized into a non-pourable, solid gel. After contacting seller, was informed that per the factory, "The hardened resin is due to the purity of our epoxy and most likely a result of temperature. Whether that is a temperature change, or from being stored in a cold place." To fix this, I was instructed "You can heat the resin in hot water, or microwave it for a few seconds (duration depends on the power of your microwave — GO SLOW and BE CAREFUL!). This will dissolve the crystals and restore the epoxy to a useful state." I'm supposed to put a toxic resin in a microwave that I use to prepare food- I don't think so. I've never had to go through this with any of the countless bottles of epoxy I've purchased and used in the past so I'm giving it a single star.

I have been using Mercury adhesives for several years and have never found a better product.

I've used a lot of CA in building RC planes. So far, this seems to be the best CA glue I've used.

Another very high quality product from Mercury Adhesives. Bond strength is strong and curing time is exactly as advertised by manufacturer. Will purchase again in the future.

The Resin in this product was like a block of ice. Suspect it is long past its shelf life as I am using 3+ year old epoxy now and it is fine. I am returning for a refund.

Worked good on an airplane ✈️