Free
A part viewer. With someone to ask.
Open a STEP model and see what is in it: dimensions, volume, weight by material and the holes it found. Then ask about it. The chat knows the part you opened, and answers general machining questions too.
No STEP to hand? Start with one of ours.
Ask about the part
Load a part and ask me about it — dimensions, weight, holes, or how you would machine it.