Kumiko Coaster Tutorial

Initial Setup: Before we start, please ensure that you grid settings are as follows:

• Major Grid spacing: 100mm

• Minor Subdivisions: 20

To change these at any time you can go to the 'Grids and Snaps' tool on the bottom tool bar, then 'Grid Settings'.

Step 1: Press the R key on your keyboard to enter the RECTANGLE command.

Select the plane that you would like to start sketching on. In this instance we will use the XY plane (the floor).

Step 2: Draw a 2-point rectangle.

Ideally you should place the first corner on the grid as shown. At this stage dimensions are not important.

Step 3: Press the D key on your keyboard to enter the DIMENSION command.

Click on the shorter side of the rectangle and enter a dimension of 100mm.

Repeat this process with the longer line and enter a dimension of 100mm.

Step 4: Click on the green arrow in the top right corner of the screen to 'finish sketch'.

This will change your view to isometric.

Step 5: Press the E key on your keyboard to enter the EXTRUDE command.

Select the rectangle you created in step 3 and pull it downwards. 

Size should be -10 mm exactly.

Note: We extrude downwards as we still want to draw on the same plane later.

Step 6: Press the A key on your keyboard to enter the APPEARANCE command.

Expand the 'WOOD' tab > Select the Bamboo material from the list and drag this directly onto the model.

Step 7: Download the Kumiko pattern here. Press the download icon and save this file to your downloads folder (or desktop).

Step 8: Click on the 'Insert' drop-down menu from the top toolbar.

Select 'Canvas'. This will open a new window.

From the new window, select the 'Insert from my computer' button.

Locate the 'Kumiko' image in your downloads folder (or desktop).

Step 9: Once you have selected your image, select the top face of the cuboid you created earlier to place the canvas on. 

Press ENTER to confirm.

Step 10: At the top of the screen, find the CREATE dropdown menu. 

Select 'Create Sketch'.

Step 12: Draw a 2-point rectangle. 

Draw a rectangle in the bottom-right quadrant of the coaster. Use the grid lines to align your points with the centre and the outer bottom-right corner.

Step 13: Press the L key to start a new line drawing. 

Click the bottom-right corner of the square drawn in step 12, then draw diagonally to the top-left corner to split the square, as shown.

Tip: Keep an eye on the canvas overlay to make sure your line matches the background pattern.

Step 14: With the line tool still activated, click the bottom-right corner of the square drawn in step 12, then draw diagonally to the top point of the long triangle as shown. Extend another line to complete the triangle.

Step 15: Connect the shapes. 

With the Line tool still active, connect the top-right corner of the square (from step 12) to the top point of the triangle (from step 14).

Tip: Notice how a green square appears when you have selected the end of a line.

Step 16: Mirroring the sketch. 

1. Open the Create drop-down menu and select Mirror.

2. For the objects, select the three lines created in steps 14–15.

3. Click the Mirror Line field, then select the diagonal line created in step 13.

4. Select OK to apply the mirror.

Step 17: Circular pattern. 

1. Open the Create drop-down menu and select Circular Pattern.

2. For Objects, drag a selection box (marquee) around the rectangle and everything inside.

3. Click the Centre Point field, then select the white dot in the centre of the coaster.

4. Set the quantity to 4.

5. Select OK to apply the pattern.

Step 18: Inspection.

In the Browser tree, navigate to the Canvases folder and click the eyeball icon to turn off visibility.

Inspect the model to confirm all lines have been created successfully.

Step 19: CNC Machining

Now that the coaster design and inspection are complete, we will transition into the manufacturing phase to prepare toolpaths and generate G-code for your CNC machine.