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Prusa i2 messes up the print in the middle

Posted by luka_d

luka_d

Prusa i2 messes up the print in the middle
April 03, 2014 01:53AM

Registered: 10 years ago
Posts: 21

Hi all,

I've been trying the print this using slic3r,0.35 nozzle at normal speed.It all started very good but in the middle this comes out.Nozzel is clean,filament goes trough nozzle with hand, i fave a fan cooling upper part of barrel,i'm using arcol v4 hotend ..any thoughts on what might be the issue here?

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luka_d

Re: Prusa i2 messes up the print in the middle
April 03, 2014 10:01AM

Registered: 10 years ago
Posts: 21

I just realized this post is in wrong section...sry

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ram33

Re: Prusa i2 messes up the print in the middle
April 03, 2014 01:09PM

Registered: 11 years ago
Posts: 9

are you talking about the stringing?
if so try lowering the hot end temp and/or using exrtuder retraction
or has the print moved?

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luka_d

Re: Prusa i2 messes up the print in the middle
April 04, 2014 03:40AM

Registered: 10 years ago
Posts: 21

I will try to lower the temperature,im already using retraction

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luka_d

Re: Prusa i2 messes up the print in the middle
April 08, 2014 03:54AM

Registered: 10 years ago
Posts: 21

So i finnaly found out what causes longer prints to fail,namely the herringbone gear on the motor.When the motor heats up a little it started to slip causing no extrusion

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jinx

Re: Prusa i2 messes up the print in the middle
April 08, 2014 04:43AM

Registered: 11 years ago
Posts: 528

no way yr motors should be getting that hot. have you set the pots on the driver

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luka_d

Re: Prusa i2 messes up the print in the middle
April 08, 2014 07:10AM

Registered: 10 years ago
Posts: 21

they are just warmer than other,about twice as warm,i adjusted the potentiometers.
There are two on each stepper driver ,one for power and the other one is for ... ?