diff options
| -rw-r--r-- | docs/Delta_Calibrate.md | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/docs/Delta_Calibrate.md b/docs/Delta_Calibrate.md index d8079456..7eb6ec1b 100644 --- a/docs/Delta_Calibrate.md +++ b/docs/Delta_Calibrate.md @@ -14,6 +14,22 @@ tower endstop switches. If one is using Trinamic stepper motor drivers then consider enabling [endstop phase](Endstop_Phase.md) detection to improve the accuracy of those switches. +Automatic vs manual probing +=========================== + +Klipper supports calibrating the delta parameters via a manual probing +method or via an automatic Z probe. + +A number of delta printer kits come with automatic Z probes that are +not sufficiently accurate (specifically, small differences in arm +length can cause effector tilt which can skew an automatic probe). If +using an automatic probe then first +[calibrate the probe](Probe_Calibrate.md) and then check for a +[probe location bias](Probe_Calibrate.md#location-bias-check). If the +automatic probe has a bias of more than 25 microns (.025mm) then use +manual probing instead. Manual probing only takes a few minutes and it +eliminates error introduced by the probe. + Basic delta calibration ======================= @@ -39,20 +55,13 @@ calibration completes, one can remove this setting from the config.) There are two ways to perform the probing - manual probing (`DELTA_CALIBRATE METHOD=manual`) and automatic probing -(`DELTA_CALIBRATE`). Automatic probing utilizes a hardware device -capable of triggering when the toolhead is at a set distance from the -bed. The manual probing method will move the head near the bed and -then wait for the user to follow the steps described at +(`DELTA_CALIBRATE`). The manual probing method will move the head near +the bed and then wait for the user to follow the steps described at ["the paper test"](Bed_Level.md#the-paper-test) to determine the -actual distance between the nozzle and bed at the given location. It -is recommended to use manual probing for delta calibration. A number -of common printer kits come with probes that are not sufficiently -accurate (specifically, small differences in arm length can cause -effector tilt which can skew an automatic probe). Manual probing only -takes a few minutes and it eliminates error introduced by the probe. +actual distance between the nozzle and bed at the given location. To perform the basic probe, make sure the config has a -[delta_calibrate] section defined and run: +[delta_calibrate] section defined and then run the tool: ``` G28 DELTA_CALIBRATE METHOD=manual |