Hi all,
I'm struggling to get my G-Code right and am hoping someone will correct my syntax, below is what I have and my comment on what I'm expecting it to achieve:
G28 ;Home
G1 Z15.0 ;Move the platform down 15mm
G1 E5 F200 ;extrude 5mm of filament at 200mm/min
However, I'm not getting 5mm of filament extruded to prime the hot end (I'm doing this because when a print finishes I'm getting expansion of the filament and a nothing printing in the first few cm of the print run. Can anyone comment on what looks wrong with this picture?
Cheers
-
oneloosecrank
- Posts: 1
- Joined: Sun Aug 27, 2017 4:41 am
Re: Initial G-Code to prepare filament
It is hard to tell if your current mode is absolute or relative, so to be certain of the mode I need I would prefix your extrusion code with:
G91 ; Set relative positioning
This will make sure your commands are relative to the current position and thus you should get 5mm of extrusion.
Another problem you could have, which is hard to tell without seeing all the code, is that your hotend is too cold to do any extrusion. 3D printers have a minimum temperature before they extrude, as trying to force solid filament out of a small hole does not work. You would need to make sure your hotend is still at operating temperature and has not been set to coold down already.
Hope this helps.
G91 ; Set relative positioning
This will make sure your commands are relative to the current position and thus you should get 5mm of extrusion.
Another problem you could have, which is hard to tell without seeing all the code, is that your hotend is too cold to do any extrusion. 3D printers have a minimum temperature before they extrude, as trying to force solid filament out of a small hole does not work. You would need to make sure your hotend is still at operating temperature and has not been set to coold down already.
Hope this helps.
