Upgrade Generic
CNC Touch Probe for Auto Tool Length Setting
$25
Overview
A contact-style touch probe (also called a tool setter or Z-probe) that automates tool length measurement on CNC routers running GRBL, Mach3, or LinuxCNC. Instead of manually jogging the bit to the surface and eyeballing Z-zero, the probe provides repeatable, precise tool length offsets. Essential for multi-tool jobs where you need to change bits mid-job and maintain consistent Z height.
Best for
CNC operators doing multi-tool jobs who need fast, repeatable Z-zero setting after bit changes
Pros
- Automates Z-zero setting for repeatable accuracy within 0.01mm
- Essential for multi-tool jobs with bit changes
- Compatible with GRBL, Mach3, LinuxCNC, and most CNC controllers
- Very easy to install with just two wires to the controller
- Saves significant time compared to manual Z-probing with paper
Cons
- Requires controller firmware setup and a probing macro/script
- Must be placed on a consistent reference surface for accurate results
- Probe puck can slide if the surface is not level
- Not suitable for setting X/Y zero (only Z-axis)
- Cheap models may have inconsistent trigger height under 0.05mm