I have had good success running in both forward and reverse by making a backing plate that uses a re-machinable #3MT Arbor?
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which I press fit into the backing plate.? Now I just put the thread protector on the spindle of my SB9 lathe and insert the chuck directly into the spindle.?
My driving force behind solving this "reverse" problem with a threaded chuck is that I wanted to single point thread in reverse so that I could take all of the "crash" drama out of threading.? Now I just use whichever chuck is best for my project without regard to unscrewing the chuck while in reverse.
Success!
Capt. Art
On Thursday, January 16, 2025 at 04:14:49 PM EST, Mike Poore via groups.io <mpoore10@...> wrote:
I was reading the thread about the Birmingham chuck and it got me to thinking about the limitation of a threaded chuck. Has anyone come up with a way to secure the chuck to enable running the lathe in reverse? Preferably, it would not involve modifying the spindle. Work small enough for a collet can of course be run in reverse, but I am thinking about work that must be chucked.
