Smooth-On Rebound™ 25 Brushable Platinum Cure Silicone Rubber for Mold Making - Pint Unit

Okay, so it's expensive, but worth every penny. I used this to make brush on molds of some costume armor that I had 3D printed and all pieces came out perfect. Pictured is the rebound 25 mold and the result of pouring/casting Vytaflex 20 (also from smooth on).With a 1:1 ratio, you won't need a scale unless you are using unmarked containers. I typically use disposable measuring cups, so I don't need a scale. It has a decent working time so if you needed it for a larger piece, you wouldn't need to worry about it starting to cure faster than you can work.There's a thickener called Thi-Vex that will boost the volume of the silicone mix so it's not as viscous and I typically use that for the final 1-2 coats as it keeps it from sliding off the piece. However, I accidentally found out that if I forget about it, take a phone call, make some coffee, sweep out the garage and then all of a sudden remember I forgot about it sitting out, it will start to cure in the container and depending on when I remember I forgot about it, usually I'll still be able to brush it on. But now, it's starting to really cure and I have to work fast. At that point, it doesn't drip down the sides of shaped pieces and I can pile it on to cover sharp edges and angled features that may not have been adequately covered. I do not recommend trying your luck with that, because I would have been in tears had I ruined 32oz of this stuff as it's quite $$$.I ordered the trial sizes until the gallon order came in. Recommend for ease of use and quality of product.

This is a great product and I got a great brush on mold of a creature head I sculpted. Really easy to use (I'm a beginner). I did NOT use a thickening agent and that was the only difficult part of the process. It took a long long time for each coat to stop running. It seems like a toothpaste consistency but it wants to run and drip and it was difficult to keep it thick at the top of the mold. So definitely use a thickener unless you're doing a pour.I did a 2 part plaster shell over it, then cleaned and dusted the inside of the silicone mold with baby powder for my cast. I used Smooth-On 65D resin for the"slushcast".

Sure it costs more than Mold Max Stroke, but with this platinum cure silicone, you can use heat to cut the curing time drastically. I use my dehydrator at 150 F, and it cures each layer in 15 min. Since it's a brush-on silicone and you need to build up the layers, this saves me so much time. The platinum cure silicone also lasts longer than tin cure silicone.

This stuff is the 'duck's guts'. Easy to mix. Easy to handle. Releases well from the master. Holds very fine detail. Tough when cured. Pours pretty well. If you are looking for a material that can be brushed onto vertical surfaces, you need to look elsewhere. This has a fairly long cure time (30 minutes from memory?) and will flow off the vertical wall. Might be possible to fix with a thickener. But for pouring into a mold this is great stuff.PS: If you look at my history I very rarely give out 5 stars.

Captures excellent detail. Have used over Jolly King Plastiline with great results. Requires Thi-vex thickener for vertical applications.

I need about 50 foam skulls. I realized buying them is far less economical than to make them. So I used one rebound 25 kit to make a silicon mold of a simple skull. I probably could have gotten away with using 3/4 of the kit rather than the whole thing but it was my first time making a mould. I honestly questioned if one kit would be enough and was pleasantly surprised. I found the product mixed and spread easily. I used a thickener for all coats after the first one. I then made a 2 piece plaster jacket for it with some left over modeling plaster. Used some 2 part foam and was very pleased with the results!Update- decided not to stop with one skull. Used a total of 3-1/2 kits to make 2 whole skull molds, one jawless mold, one flat back skull and one jaw mold. I used a gallon kit of Polymer planet 2lb urethane expanding foam and on my first run got 29 skulls. There is a learning curve to both the mold making process and the 2 part foam. I feel like now I could do it all again with just 3 kits and get 35-40 skulls with a gallon kit. I’m making a massive catacomb like faux bone pile so I don’t need them super dense. This worked well and puts me at about $2 per skull when it’s all said and done.

This worked great, but I was able to get a lot more silicone for cheaper. Probably worse quality but I was just using it for a brick mold so the cheaper stuff worked fine. This stuff seems good but I'm afraid to use it because I don't want to waste the good stuff haha.

Me gustó lo manejable y se sillón de aplicar, con excelentes resultados!