Cast 305 Urethane Resin (Trial Unit) | For Special Effects, & More, White

Buen rendimiento y duración. Era lo esperado.

Es muy bueno

This resin worked very well for my project. The resin itself is quite sturdy after casting and was easy to measure out before casting. I highly recommend!

I’ve used a lot of casting resins and urethanes and this is one of the best Smooth-On has to offer. I like it better than 300 (2 min pot life and 10 minute cure), as 305 has a manageable pot life of 8 minutes and a cure time of 30. These characteristics make it an ideal material if you need to produce several casts in a day, while providing adequate time to mix and pour into your molds. The plastic is bright white as advertised when cured and durable. I’m producing very small castings (4-6 grams of material at a time) and the 1-1 volume ratio is very easy to mix and follow.

It works quite well if you use both a vacuum to de-gas and pressure-pot to pressurize. I still have a few bubbles float to the top or get stuck on mold features, but otherwise this is the best option I have found available on amazon. The working time is short, I only have about 3 minutes (of the 7 minutes) to get it mixed and in the mold, but not as short as the 300 version, where I only feel like I have one minute (of the 3 minutes). I did eventually switch from this to the Task 9 version to mix it with color.