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Thread: Drill press lock and stop nut - GIF

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    Supporting Member Altair's Avatar
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    Drill press lock and stop nut - GIF


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    emu roo (Feb 7, 2022), EnginePaul (Feb 19, 2022), Floradawg (Feb 8, 2022), Harvey Melvin Richards (Feb 8, 2022), johncg (Feb 8, 2022), lassab999 (Feb 9, 2022), LMMasterMariner (Feb 14, 2022), mwmkravchenko (Feb 12, 2022), nova_robotics (Feb 12, 2022), rgsparber (Feb 12, 2022), Saltfever (Feb 12, 2022), suther51 (Feb 13, 2022), Toolmaker51 (Feb 7, 2022)

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    Supporting Member mwmkravchenko's Avatar
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    This I will make!

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    Quote Originally Posted by mwmkravchenko View Post
    This I will make!
    Me too. This is a thing of beauty.

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    Supporting Member Karl_H's Avatar
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    Quote Originally Posted by mwmkravchenko View Post
    This I will make!
    How many holes? I think I see 16 on this sample.
    If that is 1/2 - 13 UNC, then 1/8 of a turn (8 holes) would give a step of about 1/100 of an inch (0.009615 inches)

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    Supporting Member mwmkravchenko's Avatar
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    Quote Originally Posted by Karl_H View Post
    How many holes? I think I see 16 on this sample.
    If that is 1/2 - 13 UNC, then 1/8 of a turn (8 holes) would give a step of about 1/100 of an inch (0.009615 inches)
    I get 6 in one half of the sliding nut. So that would make 12 holes.

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    Supporting Member mwmkravchenko's Avatar
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    I am thinking a dowel pin and some loctite, and then make up the stationary holed nut. Laying out the holes and drilling them is not that complicated. A piece of something about 8mm thick or 3/8" would have enough beef to be easy to work with. I think I would do all the drilling and filing before I removed the piece from the original stock. And cut it off with a hole saw. Use the trick I have seen to drill a hole on the perimeter of the O.D. to let out the swarf from the hole saw. I picked up a decent set of carbide tipped hole saws when I was in China a few years ago. I love them. They sure beat a twist drill in anything thinner than 1 inch I can tell you that.

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    nova_robotics's Tools
    Quote Originally Posted by mwmkravchenko View Post
    I am thinking a dowel pin and some loctite, and then make up the stationary holed nut. Laying out the holes and drilling them is not that complicated. A piece of something about 8mm thick or 3/8" would have enough beef to be easy to work with. I think I would do all the drilling and filing before I removed the piece from the original stock. And cut it off with a hole saw. Use the trick I have seen to drill a hole on the perimeter of the O.D. to let out the swarf from the hole saw. I picked up a decent set of carbide tipped hole saws when I was in China a few years ago. I love them. They sure beat a twist drill in anything thinner than 1 inch I can tell you that.
    I'm wondering if we can't cheapen up this design a bit. What about replacing the drilled nut with a castle nut? That would save a fair bit of fabrication time.

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    Supporting Member Frank S's Avatar
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    Quote Originally Posted by nova_robotics View Post
    I'm wondering if we can't cheapen up this design a bit. What about replacing the drilled nut with a castle nut? That would save a fair bit of fabrication time.
    No reason a castled nut wouldn't work. it would be limited on fin adjustment but that may not be a huge issue for many operations. I personally like a spring-loaded quick nut, and setting my milling cutters to a predetermined depth in the collets, but that's just me
    Last edited by Frank S; Feb 14, 2022 at 07:52 AM.
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    Supporting Member mwmkravchenko's Avatar
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    Quote Originally Posted by nova_robotics View Post
    I'm wondering if we can't cheapen up this design a bit. What about replacing the drilled nut with a castle nut? That would save a fair bit of fabrication time.
    The only kick in the pants will be that at least on my drill press the threaded column is "D" shaped. So it will require some filling in and then filing to shape. Probably a bit of weld on the inside and then some filing. I am not adverse to a scratch build as it is probably the same amount of time in the end.

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    Supporting Member mwmkravchenko's Avatar
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    Quote Originally Posted by Frank S View Post
    No reason a castled nut wouldn't work. it would be limited on fin adjustment but that may not be a huge issue for many operations. I personally like a spring-loaded quick nut, and setting my milling cutters to a predetermined depth in the collets, but that's just me
    Yeah, But I would have to have my milling machine running for that. Right now it is in pieces from the move. And my tractor will only be going in the spring. I am not working on my tractor in the winter thank you very much!



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