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DIY 4th axis for the cnc 3018

IMG_20240106_101511.jpg DIY 4th axis for the cnc 3018
IMG_20240106_101306.jpg DIY 4th axis for the cnc 3018
IMG_20240106_101429.jpg DIY 4th axis for the cnc 3018
3018_4thAxis_80mm.stl DIY 4th axis for the cnc 3018
3018_4thAxis_90mm.stl DIY 4th axis for the cnc 3018
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  • 3018_4thAxis_80mm.stl
  • 3018_4thAxis_90mm.stl

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Publication date 2024-01-06 at 09:26
Design number 1691741
banditenprint

banditenprint

3D printer file info

3D model description

simple DIY 4th axis for small cnc machines based on the work of Caleb (https://www.instructables.com/Carve-Custom-Wooden-Game-Pieces-12-CNC-Upgrade/)

I use Carvco and Candle as programs for milling.

For the 4th axis I use the Y axis motor (nema 17). We need to tell Candle how many micro steps are needed to travel 1 mm on the surface of our workpiece.

In order to adjust this value we first have to calculate the following:

(motor steps per revolution) / (circumference of your workpiece in mm)

for example:

(200*16) / (10*Ο€) = 101,8591636
(steps*microsteps) / (diameter*Ο€)

or copy and use my google spreadsheet here:
https://docs.google.com/spreadsheets/d/1yplnLaClQGJCWA4kM8A4Cu1zft4cBswvAxFRX5ZbriE

Then enter the result into the Candle console to adjust the steps needed.
in my case I had to write the following into the console:
$101=101.8

Please note that this step has to be adjusted/re-calculated every time whenever the diameter of your workpiece changes!

The two versions differ in the hole spacing for attachment to the spoilboard.
90mm for the aluminum board and and 80 for the MDF spoilboard from Genmitsu for example.

Here is a short video for assembly
https://www.youtube.com/shorts/YoWDUofTS6w

Even if this method is far from perfect, I hope you enjoy the process and outcome like I do.

3D printing settings

PETG - 20% infill or more

Every material should be working fine, except TPU ;)

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