Final Score 2545!
A very cute and cozy game! It would be helpful to be able to check the customer's order while you are in the workbench area. I would also love to see a little more emphasis on problem solving that forces interesting choices. Maybe you can add a little bit of deduction on the types of the body parts. Like "No more than 3 plastic parts, more than 2 metal parts, and no parts of the same type touching each other".
But overall, great work!