Improved Z Axis for Cyclone PCB Factory

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I’d like to renew my CNC for PCB, I select a project called Cyclone PCB Factory to start.

But I think there are some issue on the mechanic, so I start to fix they, one of the more important fix is Z Axis for Cyclone to prevent movement when drill the PCB.

I use standard Cyclone system for connection, movement and bearing, but the structure is renewed.

Stepper is a standard Nema17 form factor. I design an holder for 50mm splindle and an holder for a dremel (big).

I advise to print gears with PETG.

3D model

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  • 1x155mm Threaded rod
  • 2x147mm Smoth rod
  • 2x608ZZ bearing
  • 2xM8 nut
  • 2xM8 blocked nut
  • 1xSpring
  • 2xM8 Washer
  • 4xLM8UU
  • 12xM3 screw 12mm
  • 8xM3 screw da 26mm
  • 3xM3 screw without head
  • 23xM3 nut
Linear bearing LM8UU

You can buy here

Bearing 608zz

You can buy here


X carriage printing process
Z carriage printing process
Z holder printing process


Z Axis assembled photo

The Threaded rod have in sequence (from the bottom)
1 bearing B608ZZ already inserted in the structure
1 M8 blocked nut (Bleu)
1 M8 Nut
1 Spring (as other in cyclone PCB)
1 washer
1 M8 Nut
1 M8 blocked nut (Bleu)
1 bearing B608ZZ (inserted in the threaded rod)

Assembly instruction

  • First insert bottom bearing then in the threaded rod instert all other quite near.
  • Insert the threaded rod in the top (with the other bearing inserted in the rod to the top)
  • the insert the rod in the bottom bearing (with the blocked nut about 4 mm inserted)
  • Then insert the gear in the top and stop the top blocked nut with a pair of thin pliers then rotate the gears to permit the blocked nut to go near the top bearing.

Here a video with all step of assembly.



Original holder file

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9 Responses

  1. Manuel says:


    How many steps per mm must be placed on the z axis?
    You speak spanish?
    My english is not well
    Thank you

  2. Manuel says:

    I have a dremel 300 and it does not fit properly in the fastening piece. Can you hand me the original file to modify it or do you have the modification made for this dremel to pass it to me? Thank you

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