Hello all, I’m looking for some advice. I’m working on a prototype of a handheld casing for an outdoor sensor (approx. 20×10×5 cm) that needs to be rigid, weather-resistant, and have fine surface details. We’re considering urethane casting instead of injection molding. What are the trade-offs I should watch out for in terms of dimensional accuracy, finish, and durability for this size and application?
Also, has anyone experienced issues with shrinkage or flexibility of the mold deforming features on parts that size?