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Introduction of Digital Fabrication Tools to K-12 students by making music box using laser cutter. Understanding the concept of sound making from the music box by using the drum and the metal comb.
1) 1 pc 800mm x 610mm 3mm thickness plywood
2) DIY mechanical hand crank metal music box movement part
3) Grade 240 sandpaper
4) Glue
Design a music box using 3D modelling tools, such as Fusion 360 software. Gather all the necessary items that are required to make up a music box. Get all the dimensions to design a music box so that the parts can be installed into the box.
1) Gather materials, such as DIY mechanical hand crank metal music box movement part, 3mm plywood, and other hand tools.
2) Measure the space required to house the required components.
3) Design the music box using 3D modelling software.
Save the 3D model into DXF format and use CorelDRAW software to check all the parameters before sending the files to laser cutter. Set all correspondent parameters for laser cutting a 3mm plywood.
1) After generating the 3D model in Fusion 360 software, save the file as DXF format in order to open in CorelDRAW software to set the line type (HAIRLINE option for vector cuts).
2) Print the files and use EpiLog Dashboard software to set all the required parameters to laser cut the 3mm plywood.
3) Gather all the cutting parts and ready for assembly.
Assemble the cutting parts according to the design. Install all the required accessories after the box is formed.
1) Sand all the cut-out parts, especially the top cover’s 2 small shaft make them more rounds.
2) Slot the handle of the DIY mechanical hand crank metal music box movement part into the long side (with hole) piece.
3) Fit both long side (with hole and without hole) parts to the base part, follow by both short side parts with the top cover.
Reflection
1) The kerfs can be increased in numbers for strengthening the box contact.
2) The 2 holes for the top cover can be smaller, for this case is 3mm (same as material thickness) instead of 4mm, reason being that the pins at the top cover will be filed for a smoother edge.
3) If you have mastered the 3D design software, you could be able to come out with a more fanciful design for the body rather than a generic standard rectangular box.
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