1 Topic by jeffreuter

  • jeffreuter
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  • Registered: 2013-06-15
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Topic: Help find a replacement extruder motor: 400 steps/rev

I recently replaced the hot end of my Solidoodle2 with an E3D.  I've followed all the recommended steps, adjusted the E trimpot using the audible technique (had to set it down to 0.100V), and calibrated the steps per unit.  But, I still get significant moire patterns.  Lowering the temp from 220C to 210 improves it a little, but the parts started splitting (despite the full enclosure).

I'm ready to try replacing the extruder with a 400 step/rev part (this sounds easier than soldering a new 1/32 driver onto the driver board).

Can someone recommend a part, or define the key specs?  I saw a post that pointed to Sparkfun.  The 42BYGHM809 stepper motor  (https://www.sparkfun.com/products/10846 ) is the right physical size, but the 3V spec seems low, based on other forum discussions.

http://soliforum.com/i/?XAaorfF.jpg

Any suggestions?

2 Reply by Tin Falcon (edited by Tin Falcon 2015-07-12 21:21:20)

  • Tin Falcon
  • Tin Falcon
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  • From: New Jersey, USA
  • Registered: 2014-08-01
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Re: Help find a replacement extruder motor: 400 steps/rev

that motor will work fine. Unlike other motors it is common to overvolt steppers.  as a rule of thumb 12 volts is about the minimum you should run on that motor.  the sd only runs 12v you should be fine.

https://www.geckodrive.com/gecko/images … 0Guide.pdf

Max voltage  = Inductance in milihenries  x 32

There is no reason you could not use this motor on a 24 volt system if the board and drivers can handle it.
Tin

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