1. Got a question or need help troubleshooting? Post to the troubleshooting forum or Search the forums!

Improved Bushing holders

Discussion in 'Mods and Upgrades' started by Lance Weston, Mar 24, 2020.

  1. Lance Weston

    Lance Weston Active Member

    Joined:
    Jun 2, 2018
    Messages:
    162
    Likes Received:
    65
    Awhile ago I posted bushing holders on thingiverse for the R2. I have improved the design. The rear holder now has the x offset increase built into it. My bearing holders are more rugged than the R2 versions. you can not break them. I use open loop belting. The R2 design had a spring tensioner inside the bushing block. That meant as you started and stopped you could change position. My design is fixed, no tensioning spring. You can set the tension way too tight if you wish. I use m2.6x12 socket head self tapping screws.

    Although my holders clear the rear is really close to the print head. I made Bearing housing R2 Rear v4.stl to increase the gap from the print head to the holder by 0.4mm to take into account variation in the switches.

    When setting this up using my spacers which I posted earlier you do not need an alignment tool. When assembling on a bench you can just slide to one side. When each holder hits it's gear tighten the screws. You have to make a hole in the carriage in the x axis and the y axis to slide in the 6mm rods. I used a dremel. Only tighten the screws on one side so that 6mm rods can move with slight change in parallel of the 8mm rods. Because the 6mm rods are clamped they will not drift.

    There is no play so alignment is critical. If the 6mm rods do not go in and out easily the alignment is wrong and has to be fixed.

    https://www.ebay.com/itm/M2M2-6M3M3...hash=item2d05881bd6:m:mv_f55L_rGR9tH5CNbYX1uw

    https://www.ebay.com/itm/NEW-10PCS-SF-1-Self-Lubricating-Composite-Bearing-Bushing-Sleeve/142545443014?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

    https://www.ebay.com/itm/1-2-5-PCS-...hash=item33e0f6b8d7:m:mDLLCXfjlgimElY5jhm0jlQ
     

    Attached Files:

    #1 Lance Weston, Mar 24, 2020
    Last edited: Mar 26, 2020
    albert3d and mark tomlinson like this.
  2. albert3d

    albert3d Member

    Joined:
    Feb 3, 2018
    Messages:
    69
    Likes Received:
    28
    Will you be updating this on Thingiverse (or some other stl repository that doesn't run slower than molasses)? :)
     
  3. Lance Weston

    Lance Weston Active Member

    Joined:
    Jun 2, 2018
    Messages:
    162
    Likes Received:
    65
    I was no planning on it. I figured this was going to be the place for the R2.
     

Share This Page