We want to work with you to make the prototype you are expecting. You can come to us with a napkin drawing from which we create 3D CAD drawings so you can see what the part will look like before we build it for you. This also lets you make changes to the product before we make a prototype. Of course, if you come to us with drawings you have made, we will make parts and assemblies to your specifications. We will make suggestions on how your design might be improved upon which you can incorporate into your part (or you can tell us "thank you, but I don't need help -- just make the parts")