1 Topic by saqueeb (edited by saqueeb 2014-10-18 01:38:29)

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Topic: SD4 strange vertical sides, not straigh lines, almost wicker basketish

my SD4 with E3DV6 is now printing strange vertical walls, no longer do i get straight lines on any side wall now they are wavy? checkerboard? wicker looking? please see pics and let me know if you have any ideas?

only thing i changed was standard hot end to the E3DV6. with the standard hotend i was getting straight lines, now i get this?

Pics 1, 2, and 4 are from E3DV6

Pic 3  is from original SD4 hotend

Thanks

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SD4 with E3D V6, glass bed.

2 Reply by AZERATE

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Re: SD4 strange vertical sides, not straigh lines, almost wicker basketish

My vote is moire.
Use a ceramic screwdriver to adjust the E VREF on the board. When you do this, turn it ever so slightly. The tiniest adjustment will have a significant effect.

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3 Reply by saqueeb

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Re: SD4 strange vertical sides, not straigh lines, almost wicker basketish

so basically just a non conductive screwdriver? ( plastic, etc) clockwise? CCW? or just try each and see?

SD4 with E3D V6, glass bed.

4 Reply by AZERATE

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Re: SD4 strange vertical sides, not straigh lines, almost wicker basketish

Yup...non conductive is your friend here. wink
VREF adjustments are typically done by hearing. There is a sweet spot in between a struggling and whining noise. Most people start low then work their way up. This will be done while printing a test.

You can also adjust it via voltmeter, but I couldn't walk you through that step personally.

Printit Mason and Printit Horizon printers
Multiple SD2s- Bulldog XL, E3D v5/v6/Lite6, Volcano, Hobb Goblin, Titan, .9 motor, Lawsy carriages, direct Y drive, fishing line...the list goes on
Filawinder and Filastruder #1870.....worth every penny!

5 Reply by saqueeb

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Re: SD4 strange vertical sides, not straigh lines, almost wicker basketish

AZERATE wrote:

Yup...non conductive is your friend here. wink
VREF adjustments are typically done by hearing. There is a sweet spot in between a struggling and whining noise. Most people start low then work their way up. This will be done while printing a test.

You can also adjust it via voltmeter, but I couldn't walk you through that step personally.

yep that was it!

quarter turn CCW fixed it! thank you very much!

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SD4 with E3D V6, glass bed.

6 Reply by wardjr

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Re: SD4 strange vertical sides, not straigh lines, almost wicker basketish

saqueeb wrote:
AZERATE wrote:

Yup...non conductive is your friend here. wink
VREF adjustments are typically done by hearing. There is a sweet spot in between a struggling and whining noise. Most people start low then work their way up. This will be done while printing a test.

You can also adjust it via voltmeter, but I couldn't walk you through that step personally.

yep that was it!

quarter turn CCW fixed it! thank you very much!

A 1/4 turn?  Holy crap that thing was way out of adjustment.

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7 Reply by ggunners

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Re: SD4 strange vertical sides, not straigh lines, almost wicker basketish

You still have a periodic repetition there. It is much better than before.

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8 Reply by saqueeb

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Re: SD4 strange vertical sides, not straigh lines, almost wicker basketish

ggunners wrote:

You still have a periodic repetition there. It is much better than before.

would you suggest adjusting it even more?

SD4 with E3D V6, glass bed.

9 Reply by IanJohnson

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Re: SD4 strange vertical sides, not straigh lines, almost wicker basketish

You can listen for it better if you turn the manual extrusion speed way down in Repetier to something like 5.  The motor will turn so slowly that you can hear the pulsing of the microsteps.  Then turn the vref back and forth and listen for the spot where it sounds the smoothest.