1 Topic by sjespers

  • sjespers
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Topic: Clean extruder at start?

Hey guys,

Just got the SD4 and I have a question. I tried searching first but couldn't really find a solution so I apologize in advance if this has been covered before.

When I start a print the extruder moves to the center of the bed. That's great if it weren't for the fact that it leaves a drop of filament there while it waits for the print to start.

I played around with a MakerBot a few months ago and I think I remember that the MakerBot deposited a bit of filament before it started printing. Would that be a solution? Is this something I could add with some start code?

Any other solutions?

Thanks!
Serge

2 Reply by wardjr

  • wardjr
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Re: Clean extruder at start?

Yep you're going to want to change the start code.  I'll try and find a link or do a search for start code.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

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3 Reply by wardjr

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Re: Clean extruder at start?

Something like this should work

G21; set mm units
G28 ;home all axis
G90; set absolute coordinates
G92 E0; reset extruder distance
M104 S195; set extruder temp and start heating
G1 X145 Y145 F3000 ; move to back right corner
G1 Z0.05 F200 ;move platform close to nozzle
G1 E5 ;extrude anchor
G1 X10 F12000 ; move towards the back left as fast as firmware permits
G1 Z5 F300 ;move platform down 5mm
G92 E0; reset extruder distance
G1 Z[first_layer_height] F200 ;move platform close to nozzle

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website

4 Reply by sjespers

  • sjespers
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Re: Clean extruder at start?

Cool. That was quick! Thank you so much! I'll give this a try!

5 Reply by wardjr

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Re: Clean extruder at start?

sjespers wrote:

Cool. That was quick! Thank you so much! I'll give this a try!

Just hope it helps

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website

6 Reply by Claghorn

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Re: Clean extruder at start?

There is also this thing which can help (assuming the bed is the same size): http://www.thingiverse.com/thing:131656 I use a pipe cleaner rather than a wire in my solidoodle 2 sized version: http://www.thingiverse.com/thing:176227

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