Here's mine generated from the NetFabb material editor:M106 (Fan on)
M109 (Set Extruder Temp 0)
M92 X78.7402 Y78.7402 E14 (set axis steps per unit)
G28 (Move to Origin)
G92 X-105 Y-105 Z0.0 E0 (Set Position)
G21 (Set Units to mm)
G91 (Set to relative positioning)
G1 Z15 (Move table down 15mm)
G92 E0 (reset extrude length to 0)
G1 E15 (extrude 15mm)
G1 E-1 (retract 1mm)
G92 E0 (reset extrude length to 0)
G90 (Set to absolute positioning)
You might want to eliminate the lonely M109 from the header, since it doesn't make any sense to turn off the heater right before the print, it completely messes with the PiD when the next M104 Sxxx comes along
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thedudevt 0
So, what's in the header now besides M106 and M92 E14?
Here's mine generated from the NetFabb material editor:
M106 (Fan on)
M109 (Set Extruder Temp 0)
M92 X78.7402 Y78.7402 E14 (set axis steps per unit)
G28 (Move to Origin)
G92 X-105 Y-105 Z0.0 E0 (Set Position)
G21 (Set Units to mm)
G91 (Set to relative positioning)
G1 Z15 (Move table down 15mm)
G92 E0 (reset extrude length to 0)
G1 E15 (extrude 15mm)
G1 E-1 (retract 1mm)
G92 E0 (reset extrude length to 0)
G90 (Set to absolute positioning)
http://reprap.org/wiki/G-code
Kyle
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