Family-owned precision machine shop · Aurora, Illinois · Since 1986

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Materials · Thermosets and laminates

G10 machining

Custom G10 parts CNC machined to your drawing or sample: insulators, standoffs, spacers, washers and other parts that have to be strong and not conduct. Machined in our Aurora, Illinois shop.

Quote a G10 part (630) 904-2525

G10 at a glance

Full name
Glass-epoxy laminate (NEMA grade G10)
Also called
G-10, glass epoxy, fiberglass laminate; FR4 is its flame-retardant version
Known for
Strength, stiffness and electrical insulation
Common in
Electrical equipment, electronics, test fixtures and cold-service equipment
Forms
Sheet, rod and tube

Parts in G10

G10 parts we machine

The parts we see most often in G10, and why it suits each job. We machine any G10 part to your drawing or sample, listed here or not.

Need a different G10 part? Send the drawing, or the old part, and we’ll quote it. Request a quote

Is G10 right for the part?

Where G10 works, and where another plastic may suit

General guidance on how G10 behaves. If your drawing names G10, FR4 or another laminate grade, we machine to it.

Where it works

Insulation
A strong electrical insulator, used widely for insulating parts.
Strength
Very strong and stiff for its weight, from the woven glass inside.
Size
Takes on very little water, so parts stay stable.
Cold
Keeps its strength at very low temperatures.

Where another plastic may suit

If the part needs Often used instead
Sliding contact G10 isn’t a low-friction plastic, and exposed glass can wear the surface it rubs on. These slide better.
Higher temperatures G10 loses strength as it gets hot. These hold up hotter, as does G11 in the grades below.
Everyday parts G10 is slow to machine and wears tooling, so it costs more when a part doesn’t need its strength or insulation. These cost less.

Precision in G10

How we machine G10

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

G10 is stiff and takes on very little water, so it usually sits toward the tighter end of our range. We confirm the critical dimensions with your quote.

  1. Tooling

    The glass in G10 wears ordinary cutters quickly.

    We use carbide and diamond-coated tooling, so edges stay clean and sizes hold.

  2. Layers

    G10 is built in layers, and a rough cut can fray or split an edge.

    We use sharp tools and support the part where the cutter exits.

  3. Holes

    Holes near an edge can split the layers apart.

    We drill with sharp tools and a controlled feed, so holes come out clean.

Grades

G10 grades

G10 sits in a family of glass-epoxy laminates, with FR4 and G11 its closest relatives. Name the grade on your drawing, or tell us how the part is used and we’ll suggest one.

Grade Typically used for
G10 General insulating and structural parts.
FR4 The flame-retardant version of G10, common in electrical equipment. We machine it too.
G11 A higher-temperature glass-epoxy grade, for parts that run hotter.
Phenolic laminates A different laminate, in paper, canvas and linen grades. Phenolic

Buyer questions

G10 FAQs

Something else? Call (630) 904-2525.

All plastics we machine

They’re close relatives. Both are glass-epoxy laminates, and FR4 adds a flame retardant. If your drawing names G10 or FR4, we machine to that grade.

Both insulate well. G10 is stronger and stiffer. Ultem is a solid plastic that takes more heat and machines clean on every face. If your drawing specifies one, we machine to it.

Yes. We supply G10 sheet, 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 cracked or broken G10 part itself. Our experienced team takes it from there.

Request a quote (630) 904-2525
When a breakdown can’t wait, ask about our expedited service