motors

Z-Axis

After this step printer will be looking almost like finished.

Printed parts needed:

1x Z-axis-top-left
1x Z-axis-top-right
1x Z-axis-bottom-left
1x Z-axis-bottom-right

Follow the instructions, skipping step 4 (Placing Z-covers) and there is also additional steps needed with step 5, as we are using trapezoidal screws with aluminium couplers.

After placing the motors, install couplers and then insert trapezoidal screws into them, and tighten it all with the 4 screws on every coupler. Make sure that motor shaft and screw are not touching inside the couplers. Then go to Step 7, but as nuts use adapters and the chinese nuts.

After step 11 it should look like this:

IMAG1495

I’m currently not managing the cables, as it will  be also managed differently than in Original, so Step 13 can be skipped. All the following steps can be easily followed from the Prusa manual.

I’ve changed my mind about the frame, and instead of using 6mm MDF i am using 9mm plywood, which is more stable, and still in good price comparing to aluminum. Because of that some screws which I am using are longer than in standard one.

Z-Axis before instaling GT2-belt

In next step we will make the printer moving, by installing RAMPS and connecting the motors which are already installed on frame.

Z-Axis Summary

Printed plastic parts

  • 1x Z-axis-top-left
  • 1x Z-axis-top-right
  • 1x Z-axis-bottom-left
  • 1x Z-axis-bottom-right

Metal parts

  • 2x linear shaft Φ8 320mm
  • 2x 5×8 aluminium coupler
  • 2x trapezoidal screw Tr8x8 with nut
  • 14x M3x18 screw
  • 8x M3x10 screw
  • 14x M3 nut

Electronics

  • 2x NEMA17 stepper motor

Other

  • 1x GT2 belt
  • 1x Prusa i3 vanilla frame (9mm plywood)
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