Shop Cheats: Quick Threaded Arbors





Introduction: Shop Cheats: Quick Threaded Arbors

This is the second Instructable in my maybe series of "Shop cheats." And a link to the first if you missed it: here.

I will not take credit for this one, as I saw it in a newsletter for "The Home Shop Machinist." Every now and again one seems to need to turn a bolt or other threaded work piece. But usually one does not want to damage or mar the threads when one chucks it up in the lathe. And usually making a custom arbor is a pain. Or one might try to lock the threads with two nuts (double nutted.) Only to have them be unevenly held by one's chuck, or slip loose while one attempts to turn the piece. I have been guilty of this on several occasions. So for a quick and dirty threaded arbor just take a nut, one that fits on your threaded work piece, and cut a slit in one side. Just use a hacksaw or band-saw. You may even be able to get away with using a cut-off wheel while it is on a bolt. You may want to clean the threads of the nut a bit as there probably will be some burs in them. Nothing a tap or slotted bolt cannot fix though. This way when using a three jaw chuck there is relief in the nut and it snugs up tight on the work piece. It works well. Almost too well. And they are completely reusable. I have begun to collect a number of slitted nuts just because I know I will be using them again.



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    Oh shudder! That's so useful! I almost saw a fight once that would have been avoided by this.

    Wow, great idea! Can't wait to try it out.

    So clever - I just wish I'd read this a few weeks back when I could have used this instead of a double nut which ended up me turning a wonky bar and having to pay someone to make it for me...

    This job is nuts!!! Well done I like what you have done here and thanks for sharing. AAA plus in shop!!

    This is a great tip! I actually have a need for this when holding on to a short piece of threaded bar and compressing it in a plugged tapped hole.

    If you cut the nut with a saw, then heat with blow torch or gas hob until red, then dunk in cold water( to harden it) then you can use to clean damaged threads the same as a die nut.

    I dont want to sound lame but since am not having enough experience i exactly dont understand the use of cut on nut.
    Is it that the nut was tight fit on the bolt so a cut helped it to expand and fit snugly?

    In addition to the answer up there ^ , cutting a slot in the nut means it can be compressed, so once a bolt is threaded into the nut, clamping the chuck compresses the nut and grips the bolt tightly, stopping it from moving, so it can be machined.

    brass might be better for the material chucked


    Wow, this is genius!