Got some 15" aluminum car rims that need a little work to remove some dings and scrapes on the outer rim. Plan on smoothing and polishing rims while mounted in the lathe. How can I do this in a 13" lathe without jacking up the head stock?
Well, you could rotate the head stock to face the other direction. Might be a bit hard to power that way. Ah, if you had an axle and a hub to bolt the wheels to, and the axle would fit through the spindle, from the back side, to be held by the chuck.....; I hope the shaft is a tight fit and/or the lathe is heavy and well anchored. Also, get someone to take pics, from a safe distance, for the group. Respectfully, Ron Moore
First take off your tailstock, then get an old axle that your rim will fit on. Chuck it in the 3 jaw, if it's not long enough for the rim to overhang the end of the bed make an extension from a length of pipe bored so the axle spline will fit in. Secure it with a setscrew. Support the axle with a steadyrest. This will allow you to file out the dings with a good aluminum file and polish the rim. Engineman
"Mike" wrote: (clip)How can I do this (clip) ^^^^^^^^^^^^^^^^ Forget the lathe. Mount a rim on the rear wheel of your car, and start the engine. Use a jack stand as a tool rest, and wood gouge as a cutting tool. (Did I mention jack the car up?)
On Mon, 10 Oct 2005 20:11:22 -0500, with neither quill nor qualm, "Mike" quickly quoth:
Step #1: Carefully hacksaw the ways...
Oh, never mind. ;)
2 thoughts, a la (our old friend, Rube) Goldberg:
How about cutting off a full-floating axle housing and axle, mounting it to a stand, then welding a sprocket or pulley on the axle stub, belt a motor to it, then using that as a pseudo lathe? Lotsa work.
Easier, is to use a trailer stub axle mounted vertically, hang tool rests over it, and move a tire-mounted rim by hand. Alternatively, bump a rubber-pulleyed motor onto the rim/tire to rotate it, perhaps with an old tire.
Get out a file and some sandpaper and dress out the dings and scrapes. Don't bother with the lathe. Way too much work for the results achieved, and if it's in a lathe you'll be tempted to remove too much metal and will weaken the wheel.