FYI Russell refers here to the chips that have little gear teeth
around their rims, top and bottom, that lock when you stack them. You
might have seen them while playing checkers.

I did buy some and fiddled around with them for a while trying to make
a prototype but stalled out without real progress. I decided they'd
need to be just the right diameter and have rather fine teeth. So it
seemed that approach might work better at the manufacturing level than
as a prototype made with household objects.

The two keys worked by 1 finger could indeed be effected as a
3-position rocker bar (probably somewhat curved, possibly engaging all
or part of the proximal phalanx as well) but it seems to me the length
of the bar would need to be fit to your finger dimensions and that
sounds trickier to me than adjusting individual switches.

My currently most favored viewpoint, BTW, is to note that the properly
placed keyswitches are each not very far from a certain plane (the
plane that minimizes their summed distances from it:-) so they might
all be mounted in slots on a slab with screw adjustments for height.

That's a little ambiguous. I'll put a sketch in the files section:
kb_fig1_2.pdf



--- In chordite@yahoogroups.com, Russell Nelson <nelson@c...> wrote:
>
> Hmmm.... I notice that the chordite version on the front page could
> be implemented using the poker chip indexing system (mentioned
> somewhere on chordite.com, but I can't find it right now). I also
> notice that the keys themselves could be manufactured symmetrically,
> so there's actually only one piece of plastic for both distal and
> middle keys. It goes together upwards for distal and downwards for
> the middle key. You could make a prototype using poker chips with
> microswitches glued between them. Has anybody tried that?