I've been using Shapeways for model railway components for 4 years and have had some 50 designs manufactured, some in quantities of up to 30 items. 3D printing is one of the very useful CAD applications I use, which also include laser cutting, metal etching and PCB manufacture. Most components are Versatile Plastic, which is a great material for mechanical components, brackets, bases etc. These are generally items which are out of sight. It is strong and has good self lubricating characteristics. I use Fine Detail Plastic for items which are visible, such as parts for buildings, railway vehicles and railway signals. On some earlier jobs, Shapeways' staff were very helpful in correcting errors I'd made. Delivery has always been fast. My interest is getting models made, not in the use of 3D printer, so Shapeways provide an ideal service for me. Stephen. Sydney Australia