Cast-a-Mold Platinum 2 Gallon, Food Grade Silicone Rubber

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.

Very pricey but the best I’ve ever used. I am a fan of the seller/manufacturer for many years Being both a mold and candle maker their products offer me great quality and flexibility. Mold quality offers no fluctuations but is consistent in its outcomes. Resin and mold making is not a cheap hobby so there are no do overs.

The kit works well and it cures perfectly; the only problem is its "SCAN ME FOR DIRECTIONS" QR code was not working properly it says " This page you are looking for couldn't be found"

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.

The first thing that comes to mind here is that I don't understand why it's so expensive. They arrived well-sealed but the bottles were dented in. I placed it in a vacuum for what seemed to be a lot longer than what I should have and still it had bubbles.

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

Great product as expected. Durometer was nearly perfect. I did end up with some bubbles in my end product, but this was my first pour with silicone. I think the pot time is a little conservative I did run a timer to be sure I met it, but I think you could run over a little (74 F @ 70% humidity cast in alginate). Will be buying again!

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!