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Everything necessary (more or less) to make a DIY Spectrometer
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Make a base card
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Use some proprietary software (packaging) to draw a straight line
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Cut a 1 3/4" x 2 5/8" piece of black cardstock, divided into six 7/8" squares
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Glue the strip onto your bracket to make a very precise slot
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Check your precise slot by looking through it at a light
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Cut a hole centered on the guideline you drew
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Glue your slot in so it covers the hole you cut
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Unscrew the lens and look for the reddish/bluish infrared filter
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Slide a knife under the filter and pop it out, then screw the lens back in
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Look at a barcode through the webcam to determine its range of focus
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Turn the camera lens to focus it
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Cut a piece of DVD-R and peel it apart carefully
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Separate the 2 layers, and choose the lower, more transparent one
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Cut out a small rectangle of DVD, keeping the track lines vertical
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Tape or glue the DVD-R bit in front of the lens
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Mount your camera
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Position the webcam to point 40 degrees away from the slot
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A protractor
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Line up the camera lens with your drawn guideline
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Adjust the angle of the camera so that you can see the whole spectrum, and glue it in place
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Knot the USB cable and tape it in place
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Close off any potential light leaks with dark tape
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Boot up the Spectral Workbench software to see a spectrum
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A completed spectrometer