Casting a new trigger for my impact gun. After it broke, I created a 3D model of it and then printed it. The print was painted and smoothed for use as a pattern. After some time for the plastic and paint to cure, a silicone mold was made. The model was also sent to Shapeways to print in steel. The printed one has a hole through it to reduce the material required. Printing doesn’t really care how complicated a part is. Price is ultimately determined by the amount of material required. The print works well enough but has been replaced to see how the casting holds up.