Materials · Mechanical plastics

Polycarbonate machining

Custom polycarbonate parts CNC machined to your drawing or sample: guards, windows, clear manifolds, housings and more. Machined in our Aurora, Illinois shop.

Polycarbonate at a glance

Full name
Polycarbonate (PC)
Also called
Lexan®, Makrolon®, Tuffak®
Known for
Very high impact strength, in a clear plastic
Common in
Machine guarding, packaging, food, lab and electrical equipment
Forms
Clear, tinted or opaque; general-purpose, UV-stabilized and glass-filled grades

Parts in polycarbonate

Polycarbonate parts we machine

The parts we see most often in polycarbonate, and why it suits each job. We machine any polycarbonate part to your drawing or sample, listed here or not.

Need a different polycarbonate part? Send the drawing, or the old part, and we’ll quote it. Request a quote

Is polycarbonate right for the part?

Where polycarbonate works, and where another plastic may suit

General guidance on how polycarbonate behaves. If your drawing specifies a polycarbonate grade, we machine to it.

Where it works

Impact
Far tougher than glass. Takes knocks without shattering.
Clarity
Clear, so you can see through guards, windows and flow paths.
Stability
Takes on little water, so it holds its size.
Cold
Stays tough in cold service, where many clear plastics turn brittle.
Insulation
A good electrical insulator.

Where another plastic may suit

Where another plastic may suit
If the part needs Often used instead
Faces that resist scratching Polycarbonate scratches more easily than acrylic. Acrylic keeps a harder, clearer face where toughness matters less.
Solvents and strong cleaners Some solvents, fuels and strong cleaners can craze or crack polycarbonate. These resist far more chemicals.
Sliding and wear parts Polycarbonate wears quickly in sliding contact. These run well against other surfaces.
Repeated steam or hot water Long exposure to hot water and steam weakens polycarbonate. These withstand repeated steam sterilization.

Precision in polycarbonate

How we machine polycarbonate

±0.002"–±0.005" On critical dimensions, depending on the plastic

Polycarbonate takes on little water and holds its size well, so most parts sit in the middle of our range. We confirm the critical dimensions with your quote.

  1. Coolant

    Some cutting fluids craze polycarbonate, leaving fine cracks that grow in service.

    We use coolants that are compatible with polycarbonate, or cut with air.

  2. Clear faces

    Clear faces scratch easily in handling and on the machine.

    We keep the protective film on through machining, so the clear faces arrive unmarked.

  3. Heat and stress

    Heat and stress from cutting can leave cracks at holes and edges that show up later.

    We use sharp tooling and steady feeds to keep heat and stress out of the part.

Grades

Polycarbonate grades

Polycarbonate comes clear, tinted or opaque, in general-purpose, UV-stabilized and glass-filled grades. Name the grade on your drawing, or tell us how the part runs and we’ll suggest one.

Polycarbonate grades
Grade Typically used for
General-purpose Clear, tinted or opaque. Most polycarbonate parts.
UV-stabilized Outdoor and sunlit service, where plain grades can yellow.
Glass-filled Stiffer, more stable structural parts.
Abrasion-resistant coated Guards and windows that are cleaned or handled often.
Food-contact grades Food processing parts. Compliance comes with the grade’s supplier documentation.

Buyer questions

Polycarbonate FAQs

Yes. Lexan® is a brand name for polycarbonate, as are Makrolon® and Tuffak®. If your drawing names any of them, we machine the part to that grade. CDS isn’t affiliated with the trademark owners.

Polycarbonate is far tougher, so it suits guards and parts that take knocks. Acrylic is clearer, resists scratching better and usually costs less. We machine both, and we’ll suggest suitable plastics for the part.

Faces left as supplied stay clear. Machined faces and edges come out frosted. If certain faces need to stay clear, we plan the machining around them.

Yes. We supply polycarbonate sheet and rod, cut to size when you need it, through our material supply service.

Getting a quote

Start with what you have

A drawing, a sketch or the worn or broken polycarbonate part itself. Our experienced team takes it from there.

When a breakdown can’t wait, ask about our expedited service