Printer is extruding VERY SLOW

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Kcapra
Posts: 2
Joined: Sat May 11, 2013 7:18 am

Printer is extruding VERY SLOW

Post by Kcapra » Sat May 11, 2013 7:23 am

I was doing a print that was estimated to last around 2 hours. About halfway through I paused the printer, then resumed an hour later. Now the extruder is running very slow. I cooled everything down and rebooted to see if that would help, but after starting it up again, it is still taking 20 seconds to do a 5mm manual extrude. I pulled out the filament, then inserted it back in and make sure I could push enough of it through that nothing should be stuck, so I don't think that is the issue. Any help would be appreciated.

lotw
Posts: 74
Joined: Fri May 10, 2013 6:13 am

Re: Printer is extruding VERY SLOW

Post by lotw » Sat May 11, 2013 1:01 pm

Are you running the right temp for material your using? Is it new filemant or when that you have been using for a while, different mfg have slightly different melting points. You could also have a partially clogged nozzle, mine did that then stopped completely once, luckily it was ABS and I was able to unclog it pretty easily with acetone soaking of the parts. Also check you hobbed bolt for it being filled with plastic shavings, push the filemant through by hand, if it moves pretty easily through the heated nozzle maybe you don't have enough turns on the filemant tension bolts.

Kcapra
Posts: 2
Joined: Sat May 11, 2013 7:18 am

Re: Printer is extruding VERY SLOW

Post by Kcapra » Wed May 15, 2013 1:47 pm

Thank you for the information. It turns out that in Pronterface, there is a setting that for ABS should be at 300 mm/min, and for some reason mine got switched to 10. The one change made all the difference.

lotw
Posts: 74
Joined: Fri May 10, 2013 6:13 am

Re: Printer is extruding VERY SLOW

Post by lotw » Wed May 15, 2013 2:20 pm

I completely forgot about that setting. I stopped using Prontoface a while ago, switched to Repetier-Host. The interface is much better and you can see your part in 3d.

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Orias
Aleph Objects | LulzBot
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Joined: Wed Mar 27, 2013 1:24 pm
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Re: Printer is extruding VERY SLOW

Post by Orias » Tue May 21, 2013 6:52 am

If you encounter slowness on a print after unpausing a print, it can also be related to the firmware's "lookahead" function. Usually after it completes the current layer it will resume the normal speed.

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