Environmental Technology EN01013 6 Stir Sticks3 Brushes Castin' Craft Mixing Cup Set, Clear

Some folks have made good points about the recessed rim at the bottom making it difficult to clean/mix and the accuracy of the measurements; both valid points. I'm using mine with a 2 part epoxy which says it absolutely requires a 1:1 ratio, but I've yet to have a problem with an epoxy batch not setting correctly. I've done so with batches going up to the very top, so whatever variance the taper in the cup creates, it wasn't enough to make my 2 part epoxy set wrong. I also haven't had any problems during mixing, however it could very well be that whatever portions don't get mixed in the bottom recessed rim I just end up cleaning out.For cleaning I just wipe any excess epoxy with a paper towel (the blue shop towels work better, but practically the same). I then pour in a little acetone, swirl it around a bit, then go at it again with another paper towel. I've used the same cup for about 8 times now and there have been no problems. I have noticed that very minute amounts of epoxy get stuck in the bottom, but we're talking less than paper thin amounts, and I don't expect these to last forever. Keep in mind that the ability to clean these thoroughly depends highly on the open time of what epoxy you're using. For the acetone, I just bought one of those tin gallon cans from home depot/lowes and it works fine for cleaning so far.Epoxy used: Environmental Technology 128-Ounce Kit Casting' Craft Casting Epoxy, Clear

These cups work pretty well for epoxy (the reason I bought them - I was going through my wife's kitchenware faster than she'd like). They are reasonably sturdy, and release epoxy in an acceptable manner. My breakage threshold is about 30% - if 3 out of 10 cups break while I'm releasing the hardened epoxy, then it's not worth the trouble; I believe I've only had 1 out of 6 break, and that was on the second use. The stir sticks are a nice bonus (they're essentially just oversized popsicle sticks, and slightly narrower than tongue depressors), and saved me from having to break off a few pieces of wood scraps. The brushes, on the other hand, are so cheap that they aren't worth using. The bristles came out all over the place, making them absolutely impossible to use with epoxy; but no big loss, as I really purchased this solely for the cups.

I ordered this product because I had remembered selling it years ago when I worked in art retail and was unable to find it locally when I wanted to use the casting resin made by ETI. The resin requires EXACTLY equal parts of two materials to set up correctly so the measured cups were necessary and, being unable to find anything I could measure liquid starting at an ounce, I ordered these figuring they would be perfect for the application, since that was what they were made for. Not true. The cup gets wider from bottom to rim but there is no alteration in the spacing of the measurement lines, therefore you get more of the second liquid you pour into it then the first. I did not realize this until at least two batches, so there ended up being a lot of waste. They could still be used for their intended purpose, I just had to pour the second part in slowly and keep checking the level in the bottle with the first liquid to get them equal. Alternatively, you could use another container and pour out the first before measuring, but that vessel would be ruined for any other uses. Use with caution.

Mixes my poly resins, helps me measure my poly resins, helps me pour my poly resins. Have I mentioned that I have poly resins? CUZ I DO!!PROS-They are cups, and they hold things that I cannot-They have markings that are either measurements or weird letters, but I'm pretty sure they are numbers (this resin really gets in your head)-I'm high off these poly resinsCons-MORE STIR STICKS PRETTY PLEASE!

With polyester resin, these are a must! You end up with containers you can't really clean because you cant pour the resin down the sink or it'll potentially harden in the pipes....so you can use these and throw them out and they work perfect! I've purchased this multiple times now

perfect mixing cups - works great with art resin products. measuring marks on the side are also clear and visible, even after filled. Thick and durable as well, holds up to the force of repeated mixing - great buy

Does the job. It would've been better if the cups were completely clear making it easier to see the content inside

worked but dont use the brushes - shed and screw up your project