Air Blower
Steam-engine sub-machine that pressurises air.
The Air Blower is the steam-driven route to blast pressure, bolted to a Cornish or a Watt engine as its sub-machine and taking its throttle setting rather than a control of its own. Its own left face, turned to face the way the engine sits, is the pipe connector itself: run a pipe up to that face rather than in front of it, which is the opposite of how the twin-tub blower wants its, since that one takes its pipe a cell beyond its own outlet. See Ironmaking for the flow each engine and throttle setting gives it and Bessemer process for why this is the only route to the pressure steel needs.

front
right
back
left
topMade by
| any Hammer (tool, not consumed) | ||
| Plate (Iron or Steel) | Rusty gear x 2 | Plate (Iron or Steel) |
| Rod (Iron or Steel) x 2 | Plate (Iron or Steel) | Rod (Iron or Steel) x 2 |
| Air Blower | ||
Needs: 3 Plate (Iron or Steel), 4 Rod (Iron or Steel), 2 Rusty gear, a Hammer (kept); makes 1 Air Blower
| any Hammer (tool, not consumed) | ||
| Plate (Iron or Steel) | any Gear x 2 | Plate (Iron or Steel) |
| Rod (Iron or Steel) x 2 | Plate (Iron or Steel) | Rod (Iron or Steel) x 2 |
| Air Blower | ||
Needs: 3 Plate (Iron or Steel), 4 Rod (Iron or Steel), 2 any Gear, a Hammer (kept); makes 1 Air Blower
Amounts are the mod's defaults; the recipe-cost level changes them (see Commands and config).