@DownwardSpiral Thanks for the suggestion. I’m not sure if a rubber hose (like a garden hose) could take the pressure without kinking. A flex shaft did occur to me, which is in some Dremel kits and also sold for drills. I think a flex shaft accessory would work but then I’m probably approaching the cost of a right angle attachment anyway. I’ll keep it in mind though. It would indeed be cheap to use a small section of garden hose if it can handle the torque. Perhaps a hose inside of a hose to add strength and resist the hose getting twisted.
(edit) I have an old plumber’s snake that’s in rough shape. Perhaps i could cut a bit of that off and run it through a garden hose, and use the snake as a flex shaft. Though it might not do too well in the counter-clockwise direction of rotation.