What is BLTouch?
BLTouch is a touch sensor for automatic bed leveling. Physically touches the bed at multiple points and measures irregularity.
How it works
BLTouch has an extendable pin. Before printing the pin touches 9-25 bed points measuring Z height. Printer creates a mesh bed leveling map and adjusts Z during printing.
Alternatives
- CRTouch - Creality clone
- Inductive sensor - detects metal (aluminum bed)
- Piezo - nozzle pressure detection
- Eddy current - Bambu Lab newer
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