Review on Trial Unit of Smooth-Cast 305 Urethane Resin by Kim Sanchez

Curing time will be shorter than recommended if using the entire test unit or more so be careful. Also pay attention to the temperature, because the warmer the faster it hardens. You don't need to cure this product before you can cast it. This worked great for me, although it left a lot of small bubbles unless you vacuum off the resin first or press down after pouring. Tiny bubbles may not be noticeable until you sand them down. I do like the product though, great company that helps a lot. The resin is very white and NOT brittle. I've been using Smooth-On products for a long time. You can expect a little trial and error with any product at first, but they have great customer service. There are also many free "how to" videos on their website.