Siraya Tech Defiant 25 Platinum Silicone Mold Making DIY Kit, 25A Hardness, Translucent, Ideal with 3D Printing UV Resin, Easy to Stop Curing Inhibition, No Coating, for Casting Epoxy Resin (35.27 Oz)

I picked up the Siraya Tech Defiant 25 Platinum Silicone kit to make dice molds for my resin projects, and honestly, I was impressed from start to finish. I’ve tried a few different silicones over the years, but this one stood out for a couple of reasons.Easy Mold Making, Even for First-TimersMixing the silicone parts was genuinely straightforward—just combine, mix thoroughly, and pour. I wasn’t worried about missing the pot life or it getting too thick way too fast. What really sold me was how smoothly it flowed around my dice masters and settled into all the small details. If you’re worried about bubbles or fine print not coming out, don’t be; the results were crisp.No Curing HeadachesOne of the frustrations with making molds using 3D printed pieces is the risk of curing inhibition, but this silicone just worked. I didn’t need to coat my models or do anything special; it cured perfectly next to my UV resin prints—no sticky spots or half-cured messes.Awesome for DiceThe 25A hardness is just right—it holds its shape but doesn’t feel like a brick when you’re demolding. My finished dice popped out cleanly, and the molds have lasted through a few sets without stretching or tearing. The translucency of the cured silicone also made it easy to check for air bubbles before the mix set up, which saved me from having to remake molds.Works Seamlessly With Siraya Tech Fast Navy Grey ResinA huge bonus for me has been using these molds with the Siraya Tech 2kg Fast Navy Grey resin. The silicone and resin work together perfectly—no curing issues, and the detail from the mold comes through clearly in the final casts. The Fast Navy Grey resin cures reliably in these molds without sticking or leaving any residues, so every dice pour came out crisp and clean.Great Value & SizeThe amount in the kit is generous, and I got several dice molds out of one batch with some left over. For anyone making custom dice, the kit’s size and ease of use make it a practical, reliable choice.Would I Recommend It?Absolutely. If you want an easy mold-making experience—especially for detailed work like dice or resin crafts with popular resins like the Siraya Tech Fast Navy Grey—I’d say give the Siraya Tech Defiant 25 a shot. It took the stress out of the process and gave me professional-looking results with less prep and cleanup.

Excellent product to make usable things out of or for mold making. For resin molds I use Siraya Tech Build mixed with Tenacious Obsidian Black 50:50 I then UV cure the mold under vacuum in a glass jar for 30min or you can use distilled water in a glass jar and cure for 30min to remove sulfur contamination, mold is ready to be used with no reaction from the silicon. Colour's mix in very well and also micro powders like ptfe and carbon black. I will be testing mixing it with some Surface Tension Diffuser this to give the surface less friction.

cant fault this silicone at all, easy to mix and de-gas and good replication detail