WoodWorkCalc guide
CNC Feeds and Speeds for Wood: A Test-Cut Starting Guide
Wood changes from board to board. Grain direction, species, moisture, bit condition, hold-down, and the finish standard all affect a usable CNC setting, so treat every number as a documented test starting point.
At a glance
The shop-ready workflow
- 1
Choose the bit and operation first
Define the inputs before you commit material or time.
- 2
Use chip load as a controlled relationship
Use the calculation to make the decision visible and repeatable.
- 3
Record the full successful setup
Turn the result into a protected next action for the shop or client.
Calculator explainer
See what the tool is doing
Bit + material + RPM + feed
Start with controlled chip load
A safer test-cut setting
CNC Speeds and Feeds →RPM + flutes + chip load
RPM × flutes × chip load
Starting feed rate
CNC Feed Rate Calculator →Setup + run time + tooling + material
Machine and labor costs + profit
A repeatable CNC job price
CNC Cost Calculator →Choose the bit and operation first
An upcut, downcut, compression, straight, or ball-nose bit does not make the same cut. Define the material, flute count, diameter, and operation before choosing RPM, feed, or depth.
Use chip load as a controlled relationship
Feed rate, RPM, and flute count work together. Start from the tool manufacturer's guidance or a conservative calculation, then examine chips, heat, sound, and edge quality on matching scrap.
Record the full successful setup
Write down the wood species, bit, machine, RPM, feed, plunge, depth of cut, hold-down, and result. That record becomes a shop reference you can trust.
Common questions
Answers before you start the job
What feeds and speeds should I use for wood CNC work?
Use the bit manufacturer's guidance and a calculator as the starting point, then make a controlled test on matching wood. Machine rigidity, bit geometry, hold-down, and desired finish all matter.
Why does CNC wood cutting burn or fuzz?
Heat, poor chip clearing, a dull bit, unsuitable feed or RPM, grain direction, and weak workholding can all affect the edge. Adjust one variable at a time during a test.
Should I save feeds and speeds by material?
Yes. Record the complete setup, including the bit and machine, so a proven result can be repeated rather than guessed again.