Laptop Stand Design

25 Feb

Week7 Machine Controlled Machining;

---Standing Leg---

Right click from top menu to create new component - create sketch - select work plane.

Use tools from the sketch palette to add constraint to lines that are perpendicular/ parallel to each other

Add sketch dimensions by clicking on 'Modify' - 'create parameters'. Set thickness to 18mm and 'Legwidth' to 300mm.

Extrude by 'thickness' as defined.

Select all edges from top view by drawing a rectangle. Add 3mm radius. Apply filter function to smoothen the edges.

Activate top layer of the design. Copy and paste component. Apply joint function to position the new stand relative to the first one.

---Surface Design---

Create new component, the surface of the laptop stand. Select drawing plane, click on Project / include in order to see the lines from other components already drawn as reference. Draw rectangle and constrain it.

After one tab is drawn, add three others by mirroring. Draw two lines connecting midpoints of the rectangle.

Select the two by holding shift. Turn normal line to construction line. Apply mirror

Select all profiles I want. Extrude.

To remove the surface layer from standing legs, apply combine then choose cut.

---Supporting Legs---

Create offset plane. Select plane. Create new sketch on that face. To see intersects, click project -> intersect. Draw rectangle

Create a midplane by choosing a front and back plane.

Extrude

Mirrow

Add ventilating holes.

---Export to DXF File---

Create new sketch by choosing one surface of the component then click on 'stop sketch'. Repeat until all components' surfaces are outlined in new sketches. Finally save each sketch just created as DXF file.

☞ TIPS:

1. Triangle showed when mouse hovering above a line means midpoints.

2. Creating an Offset plan is useful when sketching a 2D figure in a 3D circumstances.

Download the design file: Laptop-Stand.f3d

Electric Ukulele Design

4 July

Week7 Machine Controlled Machining; CNC; Woodpecker

---Design---

I used Fusion 360 to design a 3D file. I drew the rough outline of my ukulele by using the spline tool after inserting an attached canvas onto the sketch plane. Then I rescaled the outline to fit the size of my ukulele.

I sliced the body into two layers according to the thickness of the board we used. Here's what it looked like when I flattened each part out.

---CNC---

I exported the design file into DXF format to send to generate the cut file. The milling machine I used is called Woodpeck DSC-971 accompanying its own Chinese software to design the cut file. I set the depth to 10mm and speed equivalent to 3cm/s. I used 12 nails to fix the board.

The problems I found is that the board was not flat from the top to bottom. Therefore I set the depth of cut by 2mm deeper for it to cut through by 2 cuts.

The design file and the cut file can be downloaded from below:

Design file: Ukulele_76cm.f3d

DXF file: Uku-outline.dxf

Cut file: Ukulele.U01