It's kind of a niche application, but a few days ago my PR for implementing garden hose threads and connectors, as well as mason jar threads and caps, got approved and merged.
I needed BOSL2 to do this for a project, and thought it might be useful to include.
No layers. Fast. It seems to be a kind of resin printing that focuses light on different points in a volume of clear liquid, solidifying wherever the light is focused.
https://makezine.com/projects/instant-prints-opencal-layerless-3d-printing/
I expect that the limitations would be similar to resin printing: no multi-color or multi-material, messy, toxic odors.
In fact, the limitations are even more severe: NO colors, just transparent. The resin is not easily available, and requires a more complex curing process. A slicer is not applicable, it needs a "voxelizer", probably not mature software.
Even so, I think this is really cool.
I have a 1980s-era Korg Poly 800 keyboard synthesizer that, while somewhat primitive by today's standards, has been a useful addition to my recording instrument collection. It's been in storage for the past 25 years.
Before I stored it, it had developed a pitch instability in which the tuning slider, which normally would adjust the pitch in a range half a step up or down, became really sensitive, changing the pitch several steps through the slider's range, making it impossible to tune. A local engineer thought it might be some slider potentiometers that were bad, so I paid him to replace them, but the problem didn't go away.
I thought I might settle for pushing the slider all the way to the left and simply transposing the notes I'd play on it to compensate for the new tuning, but unfortunately the tuning isn't stable. It drifts around.
It would be nice if I could recover this thing and make it usable again. The oscillator wave selections and the various ADSR envelopes for different things make it a versatile instrument that produces sounds that my other two keyboards don't (Korg M1 and Yamaha P45).
Anyone have any idea what may be wrong?