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Bathroom Shelf

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Lauren asked me to copy a shelf seen at West Elm for our bathroom. screen-shot-2011-03-10-at-95147-pm I fabricated the five pieces of oak and made this type of steel hanger to be self-contained and keep close to the wall.
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Tool Shelf

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Some great christmas presents need a home close to my electronics bench in the laundry room. I justified my bandsaw and planer purchases by reasoning that I would be able to build useful things from cheap pine lumber. This shelf verifies the possibility.

google sketchup design:

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Insulating the Attic

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I raised the attic floor with a 2x8 frame and blew in cellulose insulation. Master insulation machine operator Jay Manke loaded the bales down in front. The cellulose is extremely dusty and difficult to contain. [gallery]
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CNC Part 3

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CNC Part 2

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CNC Part 1

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Screw Advance Box Joint Jig

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dscf1115 I copied the design for this box joint jig from the great http://woodgears.ca/. dscf1114
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Pendulum Physics and Code

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Sometimes it's nice to forget about 3rd party components, big clunky libraries, the Facebook API, etc. and just simulate a simple physical system from first principles. Here's "mass on a string":

Count Buffon's Needle

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There is an interesting way to calculate PI with random probability called Count Buffon's Needle. The way it's done is to draw parallel lines on a large sheet of paper that are equidistant from each other. Then one would drop needles of exactly that length (the distance between lines) and count both the overall number of needles and the number of needles that intersect the lines on the paper after they settle. The probability of a needle intersecting a line works out to be 2/π.

Solar Panel

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A recent hobby has been to build and install a solar panel on our roof. It's comprised of 36 common Evergreen Solar 3"x6" 1.8W cells in a simple wooden frame with a sheet of acrylic to protect them. My Dad helped run conduit and wires last weekend and the open source hardware/software available these days makes it unbelievably easy to setup a voltage logging apparatus. A 10k then a 2.2k resistor straddle the wires coming into our basement from the panel. The junction of those is connected to an analog input on an Arduino Mini.

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