Intro to Fab Final | a drawing machine

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I made this box for my pcom final project. It took me several days to finish the fabrication part.

This is a drawing machine. When it start working, servos will control a laser diode to draw sketch(the image is captured by Kinect), and you will find a laser point on translucent panel. Then you could draw on the panel by following the trace of laser.

This video shows how it works:

1.enclosure design & 3d model

Sketch:

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Determine dimensions:

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Built a 3D model in Rhino to check the dimensions and make sure all the parts could fit perfectly.

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2. prepare materials

I bought 9′ nice wood in Home Depot, as well as some other materials, and one piece of 1/4” translucent acrylic board in canal plastic center

materials

3. measure and cut

I used band saw and milter saw to cut wooden boards(as well as acrylic board. Actually i should laser cut the acrylic if i have another chance).

34.drill holes

I drilled a square hole for cable ( so hard to drill a nice square hole!)

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I also drilled another hole for pencil sharpener.

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5.stick boards with wood glue and drive in nails

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6.drilled hols on the acrylic board.

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7.make panel

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At first, i planned  to make the panel by saw and drill. However the board was so weak(1/16”) that it cracked when i drilled on it. So at last, i laser cut the panel instead and ground off the burning edge.

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8.interior

Made a box to collect pencil shavings.

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Use chipboard to make a shelf to avoid pencils falling down from holes, and glued this shelf at the bottom of panel.

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Made a support for servos.

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Reorganized the circuit to make the interior space clean.

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Details

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1 Comment

  1. Great work! I really like the joint details. The oak looks really good with the acrylic. The detail work looks good.

    What bandsaw did you use?

    What type of servo mount did you use?

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