Siraya Tech Defiant 15 Platinum Silicone Mold Making Kit, Food Safe, Shore A 15 Hardness, Ideal for 3D UV Resin Projects, Easy Curing, No Coating Required, Durable, Versatile, 2.2 lb Set Clear

I have never made a silicone mold before now but I have zero complaints! My first try went badly but that was my fault — I didn’t realize that my clay had sulfur in it, which inhibited curing in the contact layer of silicone. Second try was perfect. Seems very easy to mix correctly. The finished mold feels durable, especially compared to a some premade molds I have bought in the past, but still captures tiny details.Curing time was surprisingly quick!! I waited 4-6 hours like the website says and it was totally cured.I will probably buy this brand again if I run out.

Super amazing product, you can't beat the quality for the price. Silicone once set is amazingly, and the curing process can't be beat. No need of a vacuum to retrieve a mold without bubbles. Very impressed

Let me start out by saying I rely on silicones and casting products to make a living. I have tried several 15-30 durometer silicones and had always had strange problems with them. Having said that, this silicone did not have any of the issues that other *more costly* silicones had that were comparable. The fact that I have also had zero cure inhibition issues when used in conjunction with elegoo ABS like 2.0 (that is my go to resin for my 3D printer) is just like the cherry on top of an already great silicone. It degasses extremely fast which speeds up production, while having ample work time when making smaller molds. I have used both the 15 and 25 duro varieties and have been equally impressed with both. One last thing worth noting is that when I had used other comparable platinum silicones that are a 1to1 ratio I seem to get a considerable amount of shrinkage. This has not been the case with the siraya tech silicone, even when using the molds repeatedly in a heated pressure pots I have not had any noticeable shrinking in any of my molds. Lastly, in my opinion it is very affordable, to be honest at its price point I didn’t expect to be this impressed by it. It is very seldom that I use a product that checks all the boxes, I wouldn’t change a thing except maybe making the product available in larger kit sizes and expanding the durometer range to include maybe a 45. It has quickly become my go to silicone for smaller molds that require some flexibility. These are my views and opinions and your mileage may vary.

This works great for my uv resin prints. Only thing is there are micro bubbles that other brands don't have.

I've been using this silicon for making resin molds for over a year and have had great success with it. Easy to measure and work with. Recommend degasing with a 3CFM, or above, vacuum to eliminate the risk of bubbles. Cures within 4-5 hours.

We used SirayaTech Fast Smokey Black to print our masters. After a lot of research, we decided to try the SirayaTech Defiant 25 silicone to make our first master molds rather than fuss with other methods to prevent cure inhibition. IT WORKS. No inhibition. And as a total bonus, I messed up and poured some of the Defiant 25 in a previously made dice mold (BBDINO 20A Silicone) and the die came out CLEAN and I have now made squishy dice without weird mold release!Highly recommend this silicone for making molds for 3d printed masters.

I am 3D printing and make silicone molds of the print.For a while I am trying to find a way to prevent the infamous "Cure Inhibition". The silicone does not cure (remains semi liquide... an unholy mess) when it gets in contact with certain chemicals, even when they exist only in trace amounts.Siraya claims that their silicone does not have this problem. IT DOES !I tried "Inhibit X" does not work as expected.I tried "Acrylic Spray", it will cover up details... not usable.But there is a solution and I am using it now for several weeks.I am using Anycubic Tough 2.0 (other resins may be different) and after UV post cure, I put the parts into an oven at 60C for several days... probably 2 days is enough. Note, that some cheaper resins will crack at high temperature, Anycubic Tough 2.0 does not.I can make silicone molds using these 3D printed parts, without any cure inhibition. I have now tried 4 different brands of silicone and they work all well what cure inhibition concerns.This Siraya silicone is not any better than any other type of silicone I have used.

After using several brands of silicone, I finally broke down I tried this brand after seeing it suggested several times. I’m wanting to make my own DnD dice but kept having issues with cure inhibition so I decided to try the Defiant silicone with Siraya Tech ABS- Like Fast Smokey black resin and IT WORKED! There were a lot of tiny bubbles in the mold but it doesn’t seem that any formed on the surface of dice. I am very pleased with this product!