Startup gcode for nozzle purge/clean

[Elliot]

For Zohar mostly, but maybe others can share their startup gcode for nozzle purge/clean.  Here's mine:

G21        ;metric values

G90        ;absolute positioning

M82        ;set extruder to absolute mode

G28 X5 Y0  ;move X/Y to min endstops

G28 Z0     ;move Z to min endstops

G1 Z2.0 F500

G92 E0                  ;zero the extruded length

G1 F500 X5 Y25 Z0.3 E10 ;purge hotend

G92 E0                  ;zero the extruded length again

G0 Y50 Z0.1 F500

Elliot

[jorwex]

A while back I read these Nophead blog posts about his "ooze free unattended start" conditions:

http://hydraraptor.blogspot.com/2012/04/ooze-free-unattended-start.html

http://hydraraptor.blogspot.com/2012/06/only-way-is-up.html

At the end of the second one, he posts his gcode...been meaning to take a second look and adapt it to my setup:

M83 ; use relative distances for extrusion

G28

G1X5Y99F9000 ; Go to the middle of the front

G1Z0.05 ; close to the bed

M104 S200 ; set extruder temp

M190 S55 ; set bed temp & wait

M109 S200 ; wait for extruder temp

G1E5F50 ; extrude a blob

G1X40F4000 ;wipe 40mm along the edge of the bed

G1Z0.3 ;lift Z 

I'd definitely be interested in any novel start/end gcode tricks people use. Cool thread idea Elliot.  

Jordan

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Jordan W