1. Task

  • Make something BIG.
  • 2. 3D CAD

  • 2.1 Sketch and extrude.
  • 2.2 Interlock wood.
  • 3. 2D Drawing

    4. Big CNC

    5. Result

    9. Download

    1. Task

    Make something big (on a CNC machine).

    2. 3D CAD

    I am modeling my rocking horse with 3D CAD to take a look it clearly before machining it.

    Sketch the part and then I extrude 18 mm regarding of the thickness of the material.

    To have a press fit and have some clearance so I can assembly them together with another part and a good corner. I drew circle of a diemeter of 10 mm to have distance more than 6 mm because the end tool diamter is 6mm.

    For not having a sharp edges, I was also adding 2mm filet at the interlocks.

    3. 2D Design

    Draw the 2d drawing in solid work with one view that I would like to cut and export them into dxf file.

    Join, set the layer into Default, choose display color by layer and set the print width into by layer to all the drawing.

    Set the layers for cutting the inner part, outside part, the material and cut the material afterward.

    Draw the 2d drawing in solid work with one view that I would like to cut and export them into dxf file.

    Then save them into dxf file.

    4. CNC


    It always good to know how to turn off the machine before start to turn on the machine, so there are 2 ways to turn of the machine: first is by clicking the ESC key on the keyboard and second is by pressing the one of the emergency button.

    After the emgency button

    If you are in the middle of machining your work, do not worry because you could still continue your work. So first of all make sure that zour work coordinates and go back the process by starting the machine again.

    Start the machine.

    Start the machine by pushing reset and then start button. You will hear the machine waking up.

    Open the air valve to activate the vacum otherwise the SPS light will turn on if the air valve is closed.

    Open the CNC software on the computer.

    Press start.

    Changing the tool

    There is a holder to open the tool from the holder and place it there. Open the holder with a wrench and now you can replace the tool. After you have fixed them nicely, measure the tool.

    Click F11, F3( user)

    0 is to put the tool back

    F3 to shift the z axis

    Input the tool number, tool length and tool diameter.

    You could do it automatically by using the sensor too.

    Put the material

    Make sure that the material is align properlz and turn on the vacumn and then making sure that the workpiece is hold properly.

    Home the machine.

    Click the home squence to enable the driver.

    Change the axis by using the arrow keyboard or press on keypad of the machine by pressing the arrow and the button on the right side of the keypad.

    Calibrate the z axis

    Use the sensor by press F2 and place the sensor exactly below the end mill.

    or manually by enabling the simple and open the dust cover.

    4. CAM

    cick nav on the navigator bar

    click program

    Set the origin

    Insert parameters offset or cut out

    Inside CW for the holes in the inner part

    Inside CW for cutting the outer part

  • Safe z. eg :40
  • Start z - height of the material + safety geight eg. 10 + 2 mm
  • Final z - -0.02 mm or -0.05 mm
  • Z increment - z down, how much step per layer. eg 4 mm
  • Feed rate - 1000 mm/min take a look on the data sheet of the tool.
  • Plunge rate- 600
  • Spindle speed -relative to the flute
  • Tool number- which tool you are going to use.
  • Tool diameter eg. 6mm
  • Method - hole- inside CW
  • Double check the parameters!

    Press calculate G-code

    Activate the dust holder and turn on the vacumn.

    Start to run

    5. Rocking Horse

    Prepare the parts

    Assembly the parts


    Time to play!



    DXF file.

    3D CAD.