Cast Iron Shaft
A shaft segment adds a little rotating mass of its own to whatever line it sits on, so a run of them rides jitter better without a dedicated flywheel to smooth it out. It runs north-south, east-west or straight up and down; a machine takes its drive from the two faces along its own shaft's axis.
A shaft standing on a solid floor is meant to show a support bearing there, the way vanilla's axle does against a wall.
See Shaft power and the flywheel.

north
east
south
west
topMade by
| any Hammer (tool, not consumed) | Rod (Iron or Steel) | Plate (Iron or Steel) |
| Cast Iron Shaft x 2 | ||
Needs: 1 Rod (Iron or Steel), 1 Plate (Iron or Steel), a Hammer (kept); makes 2 Cast Iron Shaft
Amounts are the mod's defaults; the recipe-cost level changes them (see recipe cost levels).