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Monoprice Select Mini

Start and End G-Code

Start

G21                 ;(metric values)
G90                 ;(absolute positioning)
M82                 ;(set extruder to absolute mode)
M107                ;(start with the fan off)
G28                 ;(Home the printer)
G92 E0              ;(Reset the extruder to 0)

G0 Z5 E5 F500       ;(Move up and prime the nozzle)
G0 X-1 Z0           ;(Move outside the printable area)
G1 Y60 E8 F500      ;(Draw a priming/wiping line to the rear)
G1 X-1              ;(Move a little closer to the print area)
G1 Y10 E16 F500     ;(draw more priming/wiping)
G1 E15 F250         ;(Small retract)
G92 E0              ;(Zero the extruder)

End

G0 Z120 Y120 X110   ;(Move to the top back)
G92 E0              ;(reset the extruder position)
;G1 E-30             ;(retract a bunch)
M104 S0             ;(turn off hotend/extruder heater)
M140 S0             ;(turn off bed heater)
G92 E10             ;(Set extruder to 10)
G1 E7 F200          ;(retract 3mm)
G4 S15              ;(Delay 15 seconds)
M107                ;(Turn off part fan)
M84                 ;(Turn off stepper motors.)

Configure E-Stops

Default Values

X Y Z E
V1 93.00 93.00 1097.50 97.00
V2 46.50 46.50 548.75 48.50
V2 (post 06-2017) 93.00 93.00 1097.50 97.00

Process

  1. Run the command M503 on the printer
  2. Look for the line that looks like 
    M92 X<xx.xx> Y<yy.yy> Z<zz.zz> E<ee.ee>
    with whatever your current values are.
  3. For each of the axes
    1. Zero a caliper on the nozzle carriage's current position.
    2. Command the printer to move by a certain amount (make note of how much). Note: the further it moves, the more accurate you can be.
    3. Measure the ammount the printer actually moved.
    4. Determine the new eStep value with the formula (expected_distance / actual_distance) * current_estep_setting = new_estep_setting
    5. Send the command for
      1. x-axis: M92 X<calcualted new value>
      2. y-axis: M92 Y<calcualted new value>
      3. z-axis: M92 Z<calcualted new value>
      4. Extruder: M92 E<calcualted new value>
    6. Save the setting with the command M500
  4. Repeat this process to confirm that the settings were well-dialed-in

Useful 3D Printed Modifications

Replacement Control Board: SKR Mini E3 V3.0

Conversion Guide