Building the C-Bot 3D printer: Part 13 : Assembly Day 7

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My final day of hardware assembly:  Mason brought in the missing bolt I needed to finish the HPB installation.  I also picked up a pair of ‘Astrosyn Nema 17 Isolation Mounts’ from a friend of Mason’s:  I’m told these can really help with stepper vibration to improve print quality:  I installed them on each of the Core-XY steppers.

On a side note, if you don’t feel like ordering them from England, there’s a guy on a forum here selling them in the US (only).  At the time of this blog he still has some available.

I also got the Core-XY belts ran with the help of my son.  So at this point truly, all the hardware is in place:  Nothing stopping me from the electronics next.

I printed out a case for the Rumba board.  My Rep1 was having a terrible time with extruder jams and extruder skipping.  I’ll probably need to print it again to get better quality :S


  • When installing the isolation mounts I realized the M3x10mm bolts holding in the steppers in would need to be cut down to 5mm.  So back down to the workshop with the Dremel & vice to cut eight of those.
  • I’d forgot to load the appropriate T-nuts for the Rumba case and control panel (when I finally print it):  So I had to pull off the bottom two legs, load more nuts, and re-measure stuff as I tightened everything up.

Here’s some closeups of the latest:

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Building the C-Bot 3D printer: Part 11 : Assembly Day 5
Building the C-Bot 3D printer: Part 14 : Electronics Day 1
    • Ryan
    • February 3rd, 2016 12:29pm

    How many feet of belt did you need for your build area?

  1. If you look at my BOM:
    (via the resource page:
    I listed 4 meters total: I purchased two 2m segments. Gives you some extra of course, but that’s what worked for me.

    • Ryan
    • February 4th, 2016 7:09am

    Thank you! This helps tremendously!

  2. Hey mate, that link for the isolation mounts goes to some forum with blokes complaining about congested train rides? 😀

    BTW, thanks for an awesome write-up, have been looking for a do-able printer build to replace my dodgy little i3 clone, think this is going to be it :)

  3. lol, you’re right: It looks like they’ve changed their page since I authored that. Like fixed, thanks 😉

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