Cut list
Layer stack
Links j and k sweep straight across the crank axle, so the crankshaft is built up: each phase is a pair of crank arms joined by a short D-shaft pin, with j and k riding between them. The order below was searched for, then checked against every other part over a full turn.
One side, to scale, inner plate to outer plate
Layers in one phase
Pivot stacks, inner to outer
Crank phasing, seen from the left, shaft flat up
Hardware
Everything that isn't laser cut. Spacer lengths are the gap to fill; a few tenths short is fine, since the pivots should turn freely rather than clamp.
D-shaft cut list