Close



Results 1 to 5 of 5
  1. #1
    Super Moderator Roxy's Avatar
    Join Date
    Apr 2014
    Location
    Lone Star State
    Posts
    2,182

    Question for Stepper Motor Experts

    I put together a Folger Tech i3-2020 printer. And of course, I started making changes to it. I added a servo to kick down a Z-Probe. And because my previous printer used 3mm filament, I want this printer to be 3mm instead of 1.75mm. (Incidently... The 1.75mm filament worked great. This kit is really worth the money which is an exact opposite of what I would say about Geeetech's printer kits!)

    In order to switch to 3mm filament I ordered "3mm Wire Feed Device Kits for Makerbot MK8/MK9 extruder" and the "3mm Throat Tube Pipes With Teflon" at these link addresses:

    http://www.ebay.com/itm/281903889879...%3AMEBIDX%3AIT
    http://www.ebay.com/itm/322048059374...%3AMEBIDX%3AIT

    Everything switched over pretty easily. But when I started some test prints, I can see the filament stepper motor is losing steps. I tried turning up the power on the extruder's Step-Stick, but that did not fix the problem.

    So, right now I have a higher torque NEMA-17 Stepper Motor on order. The existing stepper motor is 36 oz. inches of torque. The one on order has 78 oz. inches of torque (and is at this link):


    http://www.ebay.com/itm/111827476477...%3AMEBIDX%3AIT

    My questions for the Stepper Motor Experts are:


    • Is it likely I can fix my problem with a Stepper Motor that has higher torque ?
    • Will the motor produce higher torque with the same current or will the current have to be set higher to the motor?
    • Can I get a higher current version of the Step-Sticks than the standard version? (I've got the A4988 Step-Sticks)

  2. #2
    Senior Engineer
    Join Date
    Jun 2014
    Location
    Burnley, UK
    Posts
    1,662
    yes
    no yes
    I don't think so but they should handle it

  3. #3
    Super Moderator Roxy's Avatar
    Join Date
    Apr 2014
    Location
    Lone Star State
    Posts
    2,182
    THANK YOU SO MUCH FOR THE HELP Mjolino!

  4. #4
    Typically you need a geared extruder for 3mm filament,I use a bulldog xlnt, however the Greg's wade extruder(reloaded) is also an excellent choice.

  5. #5
    Engineer-in-Training
    Join Date
    Jul 2016
    Location
    Pennsylvania, USA
    Posts
    255
    Hi

    The higher torque motor likely will step pretty slowly if run on a "normal" 12V system. You will be back to missed steps, but for a different reason.

    Bob

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •