Silicone Mold Making Kit,66oz Platinum Silicone Rubber,15A Liquid Silicone Mixing Ratio 1:1 for Casting Resin Molds and DIY Jewelry Molds

Works great if you make sure you mix it long enough. The directions say to mix for 5 mins and if you don't it will stay tacky because it's not fully mixed, but once I actually read and followed the directions it worked great (shocking i know!). I did find that it doesn't like uncured clay. I used uncured oven bake clay to fill in some holes I didn't want on my the item I was molding and the it stayed tacky where ever there was clay. Probably if I'd used air dry clay and let it cure it would have been fine, I don't think nit liked the moisture.

I've had varied luck with other Silicone "kits" but this one, Shore Resin 15A 66 oz works beautifully!The problem with Tin cures is the 1 to 10 ratio, and other Platinum cures with the 1 to 1 parts A & B didn't mix properly.But this Shore Resin 15A was a success, EVEN with a Silicone color mixed in (about 1% color into the clear part B, then matching that weight on the scale for part A.)This was a sample pour with Selsil mold release sprayed a day ahead so it was dry and ready.After mixing A & B for about 5 minutes with a spatula and pouring into the mold it began degassing within minutes, with bubbles rising on the surface. After 3 hours it was done and the tool I used bounced on the cured, evenly colored surface. Even the trace amount left in the PLASTIC pouring cup came out easily without any mold release and showed the strength & elasticity of the finished product.This is the good stuff! The first big mold worked as planned, but I'm already on an improved version. The problem with that was in my design, which used methods based on the kind of mold you'd make if you were casting the item in Bronze.This is versatile material and doesn't need such a fussy mold treatment!The ONE BIG Issue I have now is the "push-down and twist to open" caps for the A & B. Sometimes there's not a good one in the batch but it gets through anyway. The cap for the A container FAILED, and no matter how I pushed or twisted just wouldn't go on, not to mention come off! The little wedges inside had gone smooth enough to not catch, so the only solution was to cut a slot on the side of the "outside" cap, pry it off the "inside" cap, and epoxy those two together. The other solution would have been to drill a hole through both of them (if it was stuck on the container) and put a 1/2" sheet metal screw through them, on the top, close to the edge for maximum torque (and even a 2nd so there's no way it could slip.)I understand the reason for these protective caps but that doesn't mean I can't hate them!

Was not what I wanted but was what I ordered. Needed more information in the description . Was easy to use

First time casting a silicone mold, but this material seems to be of good quality and worked just as I hoped it would. The only negative thing I would have to say about the entire deal is that the mixing/measuring cups that came with this kit were way too tiny for my purpose and therefore useless to me. Fortunately I had others to use, but the silicone is great.

The instructions were short and clear, the silicone cured nicely, and this was overall easy to work with. Although this is very messy, but there is lack of bubbles (only tiny ones). This is very hard to clean, and I found hand sanitizer works best to clean the silicone off things.

This is my first time using this particular product brand. Purchased it because of price. Not a fan of having both parts translucent but I took the time to be sure it was mixed very well. The openings to pour are too shallow and the product drips down th front when poured. Used plexiglass, made a very nice mold yesterday and did a castRemoving the mold to find small bubbles in the mold cavity. I have enough experience through working with resin on how to mix property to avoid introducing any air to a mixture. Made this same casting with a different brand without this problem. Wasted my time and materials with nothing to show for it but a mold I can't use!UPDATED 12/26/24Gave it another chance and followed the instructions again to the letter, another mold frame wasted. The product was warmed before mixing to be sure it was thin enough to degass and not as many micro bubbles but one large one but what was worse after two days the object being copied still had honey like silicone thatwouldn't cure yet the shell was firm. Luckily I was able to clean the object with an alcohol bath because It was a one of a kind. Unused product is on its way back, never to buy again!

Easy to use. Easy to measure, mix and pour. Mold comes out great each time.

Measure by weight not volume.