This is the six-pin Braille cell I built for the Sense Cube. The top housing holds six small solenoids in the standard Braille dot layout, and the lower piece clips onto a PCB that routes each driver line back to the controller. I'm on my third revision of this part. The newer version has tighter clearances around the pins and a lower overall stack height, which makes the dots feel cleaner under a fingertip. I print it in PLA at a 0.12 mm layer height so the top face comes out smooth enough to read without sanding.

A handheld flashlight body I modeled in Fusion 360. The bezel, lens recess, knurled grip, and tail cap are separate parts with real threads, so the assembly screws together the same way an actual EDC light would. I generated the knurl pattern parametrically, which means changing the diamond density or grip size only takes one parameter and the whole grip rebuilds itself. Everything else is driven from a dimension table, so the same model can be printed, machined, or sent out for anodized aluminum without redoing any geometry.

This is the fixture I built to wind the tiny electromagnets that sit behind each Braille pin. The wire is 50-micron enamel-insulated copper wrapped around a ferrite core, and winding that by hand without a guide is basically impossible to do consistently. The tool keeps the bobbin and the core in alignment while you crank the handle, so the coil comes out tensioned the same way every time. Once you have this fixture, the rest of a Braille module only needs standard assembly and soldering tools.

A pair of split-ring clamps tied together with two flat bars. The whole assembly locks a cylindrical flashlight between a quadcopter's propeller booms so the drone works as a low-cost aerial searchlight. I split each ring into two halved hoops so the parts print flat with no internal supports, then bolt around the light. By the time I got to v5, the wall thicknesses, bolt boss spacing, and clamp gap were tuned to grip a standard 1-inch barrel firmly without crushing it.

A desktop tray for SD and MicroSD cards. Each card slots in on edge so you can see at a glance which one you are grabbing, instead of digging through a stack inside a drawer. The slot widths sit at a friction fit, so the cards stay put when the tray gets bumped or tilted, but they still slide out cleanly with one finger. The whole tray fits on a 180 mm print bed without rafts, so it pops off the printer ready to use.

A clamp-on cup holder that mounts to the edge of any desk. I made this because I kept knocking my water bottle over with my elbow, and I wanted it close to the work area but not on it. A knurled thumb screw tightens the back jaw against the desk thickness, so there is no adhesive and no permanent install, just friction. The cradle has an open bottom so condensation drips away instead of pooling, and the diameter fits anything from a steel bottle to a regular coffee cup.

A two-piece bracket I modeled as a precision CAD exercise. The flat base plate has two through-holes for mounting, and a pivoting clevis arm locates on a single pin off to the side. The whole thing runs off one parameter table in Fusion 360, so adjusting the base plate thickness automatically updates the clevis height, the pin diameter, and the fillet radii downstream. The point of the exercise was to get tolerance stacking right and to think carefully about the order of fillets and chamfers, which is what comes up on real production bracketry.