Very cool!
I engaged a person at my office, who has a 3D printer, to make feet for my bicycle trainer, that mounts tennis balls, to give the trainer some flex and a more natural non-rigid feel.
Next up is an adapter for the aftermarket steering wheel of my '79 MGB to reclaim turn-signal cancelling function.
It is amazing what is available on the web for 3D print designs.
The company that makes our restaurant Vulcan grills, uses a plasma cutter for small parts, but in the past year, has started printing some components via 3D for parts that don't have to be metal.