slicer extrusion g code

recoush

Using repetier with slicer need to express some filament before start of print as it dry prints with no filment flow and misses half a layer of extrusion

Tried
M104 S180 T0
G28 ; home all axes
G1 Z 10
G91
G1 E10 F240
G1 90
G28 Z
G1 Z5 F5000 ; lift nozzle

No improvement
any suggestions?

Repetier

No space after letters, no double home z, g1 90 is no valid command. After going to z10 add
M109 S180
to wait for extruder to reach 180.

recoush

thanks
Will try this below
Note went to 195 as pla temps charts say 190-210 maybe 180 was too low to flow
M104 S195 T0
G28 ; home all axes
G1 Z10
M109 S195
G91
G1 E10 F240
G1 Z5 F5000 ; lift nozzle
will try this when i return

having some better printing with my tests this one the pla (test boat Thingiverse) was about 210 too hot i suspect some stringing still not bad for a large format test this is about 1" overall Was kind of a slow print once i can do repeatably will speed up the print time right now it is at the standard defaults.

MartinH

You should also zero the extrude before and after extruding.
G90
G92 E0
G1 E10 F240
G92 E0

You can use placeholder with slic3r to use the temp settings in slic3r config.
http://mauk.cc/mediawiki/index.php/Slic3r_placeholders<br/>

recoush

M104 S195 T0
G28 ; home all axes
G1 Z10
M109 S195
G91
G90
G92 E0
G1 E10 F240
G92 E0
G1 Z5 F5000 ; lift nozzle

Seems to make sense (this is all in the start script section of the Slicer)
anything else?

MartinH

G91 relative move is not needed

recoush

ran into a minor issue:
when the express is completing the nozzle comes down into the express puddle and drags the expressed across the bed. move to start position before lowering?

The 2nd issue the Extruder cooling fan is not coming on (have to do so manually)
No filament fan, and no bed heater either

Will remove the G91 as noted
thanks in advance

Repetier

Move sideways after extrusion
G1 X20 F6000
then it. Goes down there.

The rest is wrong configuration i guess. Make sure to not use pins double for fans and heaters and to set right pin. Numbers.

recoush

turns out the fan is working, turns on at some point. will add G1 X20 F6000 after extrusion.
thanks

recoush

thanks everyone got that working as suggested :>)