Why build the tool first
In the early 2010s a hobby 3D printer was either expensive or not really for sale. I needed one to print gears for a vinyl recorder — an art piece whose parts didn't exist commercially. So the printer wasn't the goal; it was a prerequisite I had to manufacture out of whatever I could take apart.
Where the parts came from
Flatbed scanners turned out to be a perfect donor. Each one gives up a NEMA stepper motor and a hardened linear rod with a smooth carriage already fitted — exactly the motion hardware a printer needs, for the price of a machine headed to the dump.
- Flatbed scanners → stepper motors + linear rods + carriages.
- A candle + aluminium plate → a heated bed, before I owned a proper one.
- A RAMPS board + wooden frame → the electronics and structure, wiring diagram taped to the front.
- A netbook running CAD → the brain, such as it was.
The frame stayed wooden and the wiring stayed exposed the whole time. It never got prettier because it never needed to — it printed.
What it made possible
Once it ran, it printed the gears, the gears drove the recorder, and upcycling-then-printing became the way I work. I have five printers now; none of them tell the story this first one does. The full chain — scanner teardown to finished machine — lives on the vinyl recorder page.
