g-code for feed

[ehel]

Hi.

I wounder what is the g-code for feed 1000mm of filament at once. My tube with the filament is 1000mm long and i want to feed the filament with g-code instead of doing it manual.

[old man emu]

The letter "E" controls the extruder, so the code would be G1 E1000

But if you use only that, the extruder feed will go step-by-step, so you have to put in a feed rate (F).

5000 is a good number

So the code you want is G1 E1000 F5000

Old Man Emu

[ehel]

Thank you.

I did try that but it didn't work at first. The reason was that the printer had a heat limiter of 190C. So i needed to turn on the extruder even if just wanted to feed some filament. Then I was not allow to feed 1000 at once.
But after I find that out your code work great. Thanks.

[old man emu]

Yes, it is a pain that you cannot work with your extruder unless it is at operating temperature.

Obviously there must some M code that will disable that heat limit.

Old Man Emu

[3dkarma]

M302 enables cold extrusion. E1000 is very long and would be picked up on the firmware as a dangerous length of extrusion and prevented (extruding 1m of filament at a time is generally seen as a bit much). Drop it down to E200. You can always issue the same command 5 times. F5000 is really, really, really fast. Drop it down to F500 and you'll have a chance to catch it if something goes wrong.