Model-Pro Polyurethane Casting Resin Liquid Plastic for Making Models and Crafts - 3.8l Kit

High quality, water like viscosity. Quick cure time with nice finish.

This was my first time working with a urethane resin, had a project that required 2 dozen replicas of 6" sculpture. Took some testing to get a feel for this material but I eventually dialed it in. Here are my takeaways: -Material sets and hardens extremely quickly. At 78F in my shop my total working time was under 90 seconds. I needed more time so I refrigerated the two parts to roughly 45F and this gave me roughly 3.5 minutes. I was able to demold the castings in about 10-12 minutes, my production went quick with this aspect -This material is certainly not bubble free, at least in a closed mold with tough geometry. A pressure pot was needed - this worked excellently but I had to be extremely quick to get it mixed, poured, and pressurized. (chilling the resin was necessary for enough time) -It is relatively exothermic, it gets quite hot when setting. -I did not experience any brittleness or lack of hardening with the two separate kits I purchased. It does seem relatively forgiving with mixing. -The as-cast material has a very nice feel to it and accurately reproduced all the details from my mold. It can be sanded reasonably well (with dust extraction!) My client was extremely pleased. I wouldn't hesitate to purchase this again.

Good product and shows great detail

This material works very fast and is a nice solid off white, it can be a little brittle but it's worth getting for a nice white finish that is perfect for painting.

I don’t give 5 stars for anything, unless it is exceptional. I was pleasantly surprised with the quality and performance of this product. I used it as a plastic liner for a wood box and just spread it on. The material is durable and somewhat flexible, which is what I wanted. Be aware it hardens in a minute so work fast and use small batches.