Cast-A-Mold Platinum 1 Gal (0.5-Gal Part A + 0.5-Gal Part B), Food Grade, Platinum-Cured Silicone Rubber Mold Making Kit, DIY Set for DIY Resin Crafts, Casting Epoxy and Polyurethane Resin

I used this for mold-making and it works quite well. Platinum cure silicones (like this) make really excellent, flexible, durable molds. Way better quality than tin cure silicones. But! you should be aware of a few issues with platinum cure silicones in general.The first is the viscosity tends to be quite low. This means you don't have to degas the resin, which is great as bubbles will float to the top, and it also means you get incredible detail on the mold. But it also means that if you have any small pinholes or fissures in the mold it will leak out, so you have to be quite careful about sealing it up.The second is that a variety of materials can poison the platinum catalyst. The big one is epoxies; resin prints (epoxy based) for example will poison the catalyst and the resin will never cure. But there are a bunch of things that will poison the catalyst. Check very carefully before you use this product because if you try to mold something that poisons the catalyst, the resin will never cure and you will have a gloppy mess that will likely ruin your mold.As long as you look out for these two gotchas this product works absolutely great. If you can't use platinum cure for one of the above reasons, tin-cure silicones are an alternative, but personally I only recommend tin-cure if there's a reason you can't use platinum cure. It used to be that tin-cure was cheaper but that doesn't seem to be the case anymore so platinum cure is just better all-around.

I love this product!!!! OMG!! I don't have a weight scale so I took a chance mixing by volume, the molds turned out beautifully! I wanted clear molds for UV resin projects and I am not disappointed. There are a few tiny bubbles but they did not cause an issue. I'm so in love with this! I will definitely order again! And as a bonus....it was delivered much sooner than I expected. I'm happy all the way around!

I love this product it has allowed me to make my bigger molds. I do have to let it sit longer then normal but well worth it. Still waiting for it to dry. I tried to purchase other kinds but I was always short. If u add up the cost for what u have to spend on 3 of the others u still save $20 was is awesome right now on a tight budget. The molds I am making I couldn't get anywhere else. It's so easy to use and it's not so think that u can't pour easily. Very happy.

Used this material to make a mold. The mold was a glass plate on the bottom and carved wood sides. The material was mixed and poured into the mold. It cured overnight at room temperature. The cured silicone removal was easy and clean with no air bubbles. Worked like a charm.

HORRIBLE!!! I have used liquid silicone for YEARS and know exactly how to use it. I've used tons of different brands and they all work about the same. I always make sure I add the exact ratios and stir as long, if not longer than advised. This product worked on most of the mold but in certain sections...especially around the outside it didn't set up and left a sticky mess! I'm happy that the seller will "allow" me to return it BUT I have to pay shipping costs which will be substantial since it's very heavy so I will NEVER order from them again. I'll stick with Amazon PRIME free shipping and returns from NOW ON!

Seems to be holding up quite well. Easy to mix and use. The only drawback I had was that what I was making a mold of, it is larger, therefore I had to order double. It's not cheap!

I was skeptic at first cause I havent used silicone yet but I actually found this stuff to be really easy. Low oder, great for what I needed. Will be buying again in the future!

Hello everyone! Just wanted to let you, “this is some great stuff!” Just make sure you use two equal ratio and “mix well.”Safe to use color powder Mica or ink resin paint. Paint came off since I did not “mix well” the first time, and did not cure well on the top part of the mould. I know next time, I’ll have a better experience. Just be patient and mix well. Thank you