Category Archives: Uncategorized

How long do 3D printed parts last?

Posted on February 5, 2023 by paulwallich

One data point to add to the world: in a dishwasher that’s used every day, about three years, maybe more. Back in 2020, I fixed the bottom rack of our dishwasher by printing some pegs and new wheels out of … Continue reading →

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Possibly the creepiest Christmas ornament of 2020

Posted on December 22, 2020 by paulwallich

Zapped on my glowforge, slightly modified from a design by IconPai at the Noun Project. Every year I take the bottom however many inches have to come off our tree to make it fit the living room ceiling and slice … Continue reading →

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Posted on February 6, 2020 by paulwallich
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Let There Be Light

Posted on December 4, 2019 by paulwallich

I remixed an old openscad christmas tree design to include space for a coin cell and an LED. Coincidentally I have a bunch of green LEDs lying around — their light gets through the plastic a lot better than the … Continue reading →

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Coming soon: Lasercar

Posted on October 19, 2019 by paulwallich

It takes a 21st century laser to return motorized widgets to the medieval era. I’m redesigning my basic robot car for the Glowforge — partly for convenience, partly just because I can. The laser cutter is way faster than a … Continue reading →

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More Big-Nozzle Fun

Posted on December 4, 2015 by paulwallich

This may actually be useful for other people. When I went to test different extrusion speeds for my 0.75mm nozzle on the Ubis13 I was concerned about how fast I could go and still have the heater keep up with … Continue reading →

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Switching 3D printing filament: purging versus cleaning?

Posted on May 15, 2015 by paulwallich

Before building a part out of ABS (because it has to be strong but not brittle) on my Metal Plus, I ran the hot end up to 225C and told octoprint to extrude a bunch of filament. I ran it … Continue reading →

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Artifacts inspire people

Posted on January 22, 2015 by paulwallich

Yesterday afternoon I was at Generator again. I had a not-really-useful breadboarded toy with me: My first Arduino, stuck down on a ding&dent Sparkfun protoboard holder, with an Adafruit quad alphanumeric backpack wired in by I2C. Those wires with the … Continue reading →

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Surface Mount LEDs on Paper

Posted on November 13, 2014 by paulwallich

Even without a magnifier, my old eyes and fingers can deal with some of the bigger SMT LED packages.  I’ve been doing some tests to figure out the best way to mount and connect these.  A couple dabs of wire … Continue reading →

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