---
title: "Carbon Fiber Machining & Cutting | Plate, Tube & Layup | OpenSpindle"
description: "Get quotes for custom carbon fiber parts from independent shops. CNC-routed and machined plate, tube, and rod in 2x2 twill, plain, UD, and forged layups. Upload a drawing."
canonical: https://openspindle.com/materials/carbon-fiber
---

# Custom carbon fiber parts from independent shops

Carbon fiber gives the highest stiffness-to-weight of any common material, which is why it dominates drones, motorsport, and robotics. Upload a drawing and hear back from shops set up to cut and machine plate, tube, and rod without chipping the edge.

## Carbon fiber shops on OpenSpindle

Real shops set up to cut and machine carbon fiber composite. See their equipment and get a competitive quote for your project.

[Browse all carbon fiber shops](https://openspindle.com/manufacturers?material=Carbon%20Fiber)

## Carbon fiber types shops run most

Carbon fiber is specified by fiber modulus and by the weave or layup, not by a single alloy number. These are the choices you will make when you order.

### 3K 2x2 twill

The iconic diagonal-weave cosmetic and structural cloth. Balanced strength in two directions, a clean recognizable finish, and the default for visible parts. Available as woven plate and roll-wrapped tube.

**Best for:** Visible panels, plates, drone frames, trim

### Plain weave (1x1)

A tighter over-under checkerboard weave. Similar mechanical behavior to twill with a flatter, more uniform look, sometimes preferred for smaller parts.

**Best for:** Small cosmetic panels, plates, covers

### Unidirectional (UD)

All fibers run one direction for maximum stiffness and strength along that axis. Laid up in tailored orientations for structural parts where load paths are known.

**Best for:** Spars, struts, load-bearing structure

### Forged / chopped

Short chopped tows compression-molded into a marbled pattern. Flows into complex 3D shapes a woven sheet cannot, with a distinctive cosmetic look.

**Best for:** Complex molded shapes, cosmetic hardware

### Standard vs high-modulus fiber

Standard-modulus fiber (T300-class) covers most parts. High-modulus fiber costs more and adds stiffness for weight-critical structure where deflection is the limit.

**Best for:** Aerospace and racing structure at the stiffness limit

### Solid laminate vs cored panel

A solid laminate is stacked plies machined as plate. A cored sandwich bonds thin carbon skins to a foam or honeycomb core for very high stiffness at very low weight.

**Best for:** Solid: brackets and plates. Cored: large stiff panels

## Material Properties

Representative values for a quasi-isotropic carbon/epoxy laminate. Real numbers depend heavily on fiber, resin, and ply layup.

| Property | Value |
| --- | --- |
| Density | ~1.6 g/cm³ (0.058 lb/in³) |
| Tensile strength (UD, along fiber) | ~600 ksi (4100 MPa) |
| Tensile modulus (UD, along fiber) | ~20 Msi (135 GPa) |
| Specific stiffness | Several times that of aluminum or steel |
| Max service temp (epoxy) | ~120 °C (250 °F); higher with special resins |
| Machinability | Abrasive; needs diamond or carbide tooling and dust control |
| Corrosion resistance | Inert; does not rust or corrode |
| Galvanic note | Conductive; isolate from aluminum to avoid galvanic corrosion |

Carbon fiber is anisotropic: strength and stiffness depend on fiber direction, so orientation and layup matter as much as the material itself.

## Stock Forms

- **Plate & sheet** -- Routed and machined flat parts, brackets, and drone plates.
- **Tube** -- Roll-wrapped and pultruded tube for arms, booms, and struts.
- **Rod** -- Pultruded solid rod for spars, pins, and stiffeners.

## Processes That Run This Material

- [CNC Machining](https://openspindle.com/capabilities/cnc-machining.md) -- Routed and milled with diamond-grit or compression tooling and dust extraction: the trusted method for clean carbon edges without lifting the weave.
- [5-Axis Machining](https://openspindle.com/capabilities/5-axis-machining.md) -- Trimming, drilling, and profiling complex molded and cored parts in one setup.
- [CNC Turning](https://openspindle.com/capabilities/cnc-turning.md) -- Turned features on pultruded rod and tube.
- [Waterjet Cutting](https://openspindle.com/capabilities/waterjet-cutting.md) -- A cold process used for thick stacks, but it can force water between plies and delaminate thin laminates, so most shops route instead.
- [Laser Cutting](https://openspindle.com/capabilities/laser-cutting.md) -- For dry fabric and prepreg kitting only; lasers char cured laminate.

## Finishes

Most carbon parts ship in one of a few surface states. The resin surface, not a plating, is what you finish.

- **Gloss clear coat** -- A clear UV-stable topcoat that deepens the weave and protects the resin. The classic wet-look carbon finish.
- **Matte clear coat** -- A satin topcoat for a stealthier look while still sealing the surface against UV and handling.
- **As-cut / machined edge** -- Raw cut edges sealed to prevent fraying and moisture ingress. Fine for internal or hidden edges.
- **Painted / primed** -- For non-cosmetic structural parts that will be painted, the surface is primed rather than clear-coated.

Cut and drilled edges expose fiber and should be sealed. Call out any cosmetic (A-surface) faces on your drawing.

## Applications

- Drones & UAV
- Robotics & automation
- Automotive
- Aerospace
- Consumer electronics
- Sporting goods
- Industrial / OEM

Carbon fiber shows up wherever stiffness-to-weight is the deciding factor.

## How It Compares

How carbon fiber stacks up against the metals shops quote for lightweight parts.

### [Aluminum](https://openspindle.com/materials/aluminum.md)

- Carbon fiber is lighter and far stiffer for its weight, but anisotropic
- Aluminum is isotropic, much cheaper, and easier to machine into complex 3D features
- Carbon wins on flat plates and tubes; aluminum wins on prismatic machined parts

**Verdict:** Choose carbon fiber for the lightest, stiffest plates and tubes. Choose aluminum for cost and complex machined geometry.

### [Titanium](https://openspindle.com/materials/titanium.md)

- Titanium is isotropic, tougher, and handles high heat and fatigue better
- Carbon fiber is lighter and stiffer along the fiber, but brittle and heat-limited by its resin
- Titanium takes threads and fasteners directly; carbon usually needs inserts or bonded hardware

**Verdict:** Choose carbon fiber for pure stiffness-to-weight in panels and tubes. Choose titanium for tough, threaded, high-temperature parts.

## Frequently Asked Questions

### What is the best way to cut carbon fiber?

For most cut jobs the trusted method is CNC routing with diamond-grit or compression tooling and dust extraction, which gives clean edges without lifting the weave. Abrasive waterjet is used for thick stacks but can force water between the plies and delaminate thin laminates, and lasers char the resin, so they suit only dry fabric or prepreg. Confirm the shop is set up for composite and call out edge quality, hole tolerances, and cosmetic faces.

### What is the difference between 2x2 twill, plain weave, and forged carbon?

2x2 twill is the iconic diagonal-weave cloth, balanced and cosmetic. Plain weave is a tighter checkerboard with a flatter look and similar properties. Forged carbon is short chopped tows molded into a marbled pattern that flows into complex 3D shapes a woven sheet cannot. Unidirectional (UD) puts all fibers one way for maximum stiffness along that axis.

### Is carbon fiber stronger than aluminum or steel?

For its weight, yes, by a wide margin along the fiber direction. Carbon fiber has several times the specific stiffness of aluminum or steel. It is anisotropic, though, so strength depends on fiber orientation, and it is brittle rather than ductile, so it fails suddenly rather than bending.

### What is a cored or sandwich carbon panel?

A sandwich panel bonds two thin carbon-fiber skins to a lightweight core such as foam or aluminum honeycomb. The core spaces the stiff skins apart, giving very high bending stiffness at very low weight, which is why sandwich panels are used for large flat structures like drone decks and equipment panels.

### Can you thread or fasten into carbon fiber?

Not directly with reliable strength. Carbon parts use bonded or press-fit threaded inserts, backing plates, or bonded hardware to carry fastener loads, because tapping the laminate directly tends to pull out. Note fastening points on your drawing so the shop can plan inserts.

### What files should I send for a carbon fiber part?

A STEP or IGES model plus a dimensioned PDF for machined features, or a DXF flat pattern for plate parts. Call out plate thickness or ply layup, weave and finish for cosmetic parts, edge quality, hole tolerances, any inserts, and quantity.

## Related Materials

- [Aluminum](https://openspindle.com/materials/aluminum.md)
- [Titanium](https://openspindle.com/materials/titanium.md)
- [G10 / FR4](https://openspindle.com/materials/g10-fr4.md)
- [Delrin](https://openspindle.com/materials/delrin.md)
- [Nylon](https://openspindle.com/materials/nylon.md)
- [Stainless Steel](https://openspindle.com/materials/stainless-steel.md)

## Get carbon fiber part quotes

Upload a drawing once and compare quotes from independent shops set up to cut and machine carbon fiber plate, tube, and rod.