How To Add Auto Bed Leveling To Reprapguru Prusa I3

Last updated ix months ago

The P.I.Northward.D.A. or SuperPINDA sensor will go through a number of points, in a grid design, spread across the build-plate (whether it is a powder-coated or shine PEI sail does not thing), and measures the distance to the sheet. These points are interpolated and used to create a virtual mesh of the bed. During printing, if the bed is slightly warped, the sensor will still precisely follow the surface according to its measured mesh. This procedure is performed before every print. It is besides the same procedure that happens in the second round of XYZ-scale.

The StallGuard for the Z-axis is active during the mesh bed leveling. In instance the nozzle crashes into the bed before the PINDA sensor triggers, the calibration process is interrupted and the user is asked to cheque the nozzle for any kind of debris.

You tin can initiate the Mesh bed leveling independently from Calibration -> Mesh bed leveling, on the LCD card.

Mesh bed leveling settings

The Mesh bed leveling settings can be establish within Settings - Mesh bed Leveling, on the LCD menu. There yous have the following options:

Mesh (3x3 - 7x7)
Z-probe nr. (1 - 3 - 5)
Magnet comp. (ON / OFF)

Mesh: The default filigree density is 3x3 (ix points). However, if you still feel uneven commencement layer adhesion, you can increment the density in Settings - Mesh bed leveling - Mesh to 7x7 (49 points).

Z-probe nr.: Changing the Z-sensor nr. you change how many times will each point be measured. We propose either 3 or 5 measurements per point since the final value is calculated as an average value. Changing these settings affects how long volition the Mesh bed leveling procedure takes to complete.

Magnet comp.: With 7x7 Mesh bed leveling, yous can choose whether or not to apply Magnets compensation. 11 of the 49 points are so shut to magnets, that the reading can be off by as much as 80μm (microns). Magnet compensation ignores readings from these eleven points and calculates them from the surrounding points. We suggest leaving this part on.

Enforcing the Z-calibration

If the mesh bed leveling is interrupted during the procedure, before a print, a bulletin will appear on the screen stating "Enforcing the Z-calibration" and the printer volition re-home and run through the procedure again. This can occur if there is droppings on the nozzle, pushing the bed downward when probing or if you touch and press the bed while it is probing. This will bring the deviance above a certain threshold and it will simply brand another attempt to run the Mesh Bed Leveling. This is to avoid starting it from the bill of fare again if the problem was merely an accident. If the problem remains, information technology volition repeat this procedure three times before canceling the impress.