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Prusa i3 jumping in layers

rastaman46

Prusa i3 jumping in layers
March 03, 2015 06:02AM

Registered: 9 years ago
Posts: 93

Hi I start having problem my prusa i3 start jumping in layers badly like 3 to 4 mm

prints ok for 2 3 hours then starts jumping looks like its jumping in Y axis

All belts are tight.

Calibration is of only got 0.2mm difference in dimensions.

What can cause this ??

Its ok for short prints but long prints start failing is here anything to do with Vref? or board overheating ?

Regards

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rhmorrison

Re: Prusa i3 jumping in layers
March 03, 2015 06:54AM

Registered: 14 years ago
Posts: 3,742

stepper controller possibly overheating.
Add a fan or turn down the current.

Bob Morrison
Wörth am Rhein, Germany
"Luke, use the source!"
BLOG - PHOTOS - Thingiverse

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rastaman46

Re: Prusa i3 jumping in layers
March 03, 2015 07:30AM

Registered: 9 years ago
Posts: 93

I have got Vref on axis 0.56V lowest I could get.

Ok ill try add fan to board.

Thanks for response

Regards