LET'S RESIN Silicone Mold Making Kit-Translucent Silicone Rubber Non-Toxic Liquid Mold Making Silicone-20.46oz Super Elastic Molding Silicone-Ideal for 3D Molds,Resin Molds,Silicone Molds-4H Fast Cure

I'm really happy with this brand. I was making some small molds and used a precision scale to measure the A-B amounts and was worried that I'd end up with something a little sticky as has happened to me with other brands in the past. But to my delight, three separate mold sessions were all perfect after curing. Zero stickiness. I used PLA 3D printed molds and hit them with the finest dusting of mold release spray (from a famous brand). My pieces were easy to remove with minimal effort. I find the quantity of mold compound at this price to be wonderful and I have plenty left over for some other projects. I'm not an expert at Shore hardness but the softness of this silicone matches my expectation and need based on past use of molding materials. My stretch testing of the left over mix material tells me that the durability is good too. I chose the clear formula and it is as clear as I expected. I found the working time to be generous as well and it allowed me a good 10-15 minutes of letting it gas out before I poured and many more minutes to adjust any pouring strategies or needs that I had. Good stuff!

This is great quality silicone. Very sturdy. I’ve made 2 molds and poured them each 3 times and the results were perfect. No issues with bubbles after degassing the silicone for 5 minutes, and it cured perfectly and the molds were ready to be poured into after 2 hours. I stirred a bit of mica powder into the silicone with no negative effects. I was duplicating smooth glass pieces and the cured resin was exactly like the finish on the glass. My room temp while mixing the silicone was approximately 75 degrees Fahrenheit which is close to the 77 degree max temp recommended in the directions but I had no issues with diminished working time. I’m very pleased with this product and would recommend it.

The harder had leaked a little in shipping but not enough to complain about. Double wrapped so it only got on the bottles. Easy size for granddaughter to use. Worked great for her first project

The product was easy to use and good quality

I was looking for a silicone to make custom molds that I could later use with UV resin, and this one works perfectly.At first, I was skeptical about the first mold I made because no matter how gently I stirred the 2 parts, too many bubbles appeared! I thought it would be a disaster because I don't have a bubble-eliminating booth, but I noticed that the bubbles would start to pop on their own after letting it sit, so I slowly poured the silicone into the container where I made the mold, giving each thin layer a few minutes to release the bubbles. The instructions also recommend leaving it in the refrigerator for an hour after pouring the desired amount onto the object to help the bubbles disappear. I did it as is, and the mold came out perfect. I did the first test with a couple of heads and shoulder pads from some miniatures, and despite how tiny those were, it came out perfectly, preserving all the details.

Excellent product so far. Made a silicon gasquet for a mokapot.

My first ever mold pour ever. I didn't want to make the challenge too simple, so I used it to cast a mold of an ornate detailed frame corner of a 100 year old French mirror. Another corner had been smashed off (made of plaster) so I cast the cleanly prepared different corner and prayed. It was impossible to enclose the corner perfectly, I did my best. I poured the mix into my hopeful corner enclosure, and sure enough little rivulets of mix oozed out in about 6 places. I did the only thing I could do... for about an hour, I used a putty knife blade to gather the small puddles and return the mix to the top of my pour enclosure. I needed it for the full coverage of the high point. It finally started to thicken up so I stopped spooning and ran away, hoping I didn't ruin this customer antique restoration. Part of the pour was as deep as 2-1/2 inches so I gave the batch 3 days to fully cure. It took a while to coax the enclosure/solidified pour off of the mirror frame corner, but it finally released cleanly. Now I have to pour plaster mix into my new mold and hope again. I also hope I will be able to thoroughly clean the corner that was cast, because it is covered with residue of silicon, not a good base for paint. Bottom line, I would buy again.