Most scroll saws now have a small "puffer pump" and
aimable air nozzle to blow sawdust away from the cut.
Very handy.

When doing hollowing, I often bring an airhose to the lathe.
Hollow some, stop, blow out the chips and dust, hollow some
more, . . .

Would be nice to have a built in air pump, even a small one,
and a flex necked nozzle that could be set in a needed
position and stay there 'til I moved it.

so why don't lathe manufacturers . . . ?

charlie b