EPI is The World's Plastic Machining Specialist. We'll be pleased to answer your questions or help you understand the unique issues related to plastic machining, finishing, stress-relieving, materials, assembly or other processing methods. If your question is not answered in the Frequently Asked Questions (FAQ) section please click here to submit your question.

Q: When does machining make more sense than molding?
A: Your application, product development, and marketing requirements will determine the best plastic manufacturing method. There are several factors to consider. Click "more" for the full answer.

Q: What types of bonding/gluing does EPI do?
A: EPI performs adhesive, diffusion (thermal), solvent, and ultrasonic bonding and welding.

Q: How do you eliminate stress cracks?
A: Through correct tool geometry, machine feeds and speeds, and annealing.

Q: What types of plastic polishing methods are available?
A: EPI utilizes vapor/chemical, flame, and mechanical methods to achieve desired surface finishes.

Q: What are the smallest features you can machine?
A: As a general rule, EPI can machine 0.006" drilled holes with 50:1 aspect ratios, 0.010" wide milled tracks, and hold tolerances down to +/- 0.0002"

Q: What plastics can be diffusion bonded?
A: Most thermoplastics including acrylic, PVC, Ultem polyetherimide, polycarbonate.

Q: Is it alright to specify screw thread inserts, sometimes called Helicoils, in my part?
A: Screw thread inserts may be a life-long source of stress in your part.