EPP Corporation-Plastic Machining Experts

Quality, of course, is directly related to price. Make sure the vendors you interview can provide the highest quality part at the lowest price. Plastic machining vendors can keep errors to a minimum if they are highly process driven, are ISO Certified, use documented SPC procedures, and own the proper inspection equipment such as CMM [...]

Ask about the type of equipment the potential plastic machining vendor uses. The well-equipped plastic machining vendor will look pretty much like a metal machining shop, but the true plastic machining specialist will have equipment that has been adjusted or re-built expressly for machining plastic material. The right equipment will machine plastic using the correct [...]

Just as a metal machine shop is unlikely to have the material knowledge you need, neither are they going to be able to purchase plastics in large enough quantities to provide you with the best price.
Likewise, find out if the plastic machining vendor candidates you are considering can purchase materials directly from material manufacturer. If [...]

Quiz potential vendors on their knowledge of various materials and applications. Ask them to share the information they have from their material manufacturers. Do they have any property charts or plastic material handbooks to give you? Specialists in plastic machining should have a wealth of up-to-date information.
Material knowledge is a critical area. Good plastic machining firms [...]