====== 3D Printing Stuff ======

knowledge -> vomit -> wiki


===== Esteps Calib =====

  * Load Filament (bright color recommended)
  * Find out ''M92 E'' esteps with ''M503'' 
  * From base of extruder, mark point at 120mm/12cm
  * Set local coords and extrude 100mm@1mm/s
  <code>
  M83         ; E relative mode
  G1 E100 F60 ; Extrude 100mm @ 1mm/s (60mm/min)
  </code>
  * When extrusion finished, measure from base to mark.
  * Calculate new esteps using previous measurement $x$: $E_{new} = E_{orig} \cdot \frac{100}{120-x}$
  * Set new value with ''M92'' (ie. ''M92 E421'').

===== X/Y Offset (Marlin) =====

<code>
G28                        ; home
G0 X[x offset] Y[y offset] ; move to proper bed origin
M428                       ; set current pos as bed origin
M500                       ; write to EEPROM
</code>

===== Marlin UBL =====

Kinda nice compared to Bilinear, but its poorly explained...
Firstly, manually level. Next:

<code>
G28        ; home
G29 P1     ; auto probe
G29 P3     ; interp. pts
G29 F10.0  ; set fade height to 10mm
G29 S0     ; save mesh in slot 0
M500       ; save to EEPROM
</code>

Then for start gcode excerpt

<code>
G28          ; home all axes
G29 L0       ; load mesh slot 0 (enables UBL so G29 A is redundant)
G29 J2       ; 4-pt co-planar mesh align level
</code>