Photon trains the FDP, the deep flexor that bends the end joint: a claw grip with the
fingertips pulling on the rollers and a blocker at each end joint that keeps it from becoming a
crimp. Fitted to your hand from a photo.
Spark trains the FDS, the superficial flexor that bends the middle joint: the fingers hang
over larger free-spinning rollers with the end joint on top. Its standard roller positions fit
most hands; fitting it is optional.
Next: print it and put it together
- Printing: plastic, slicer settings and the brims that keep
the tall parts on the plate.
- Parts: how to tell the 14 parts apart.
- Assembly: rollers, pins and walls, step by step.
Spark prints and goes together the same way; its own chapters are still
to come.
The fit has only been checked digitally: adjust it after a test print.
Open the printing guide