Drill press lock and stop nut - GIF

**Altair** · Feb 6, 2022, 03:42 PM

Drill press lock and stop nut.

Previously:

Glove caught in drill press - photo
Drill press coolant system - video
Mini drill press - video
1945 column drill press - photo
Christmas tree drill press - GIF

**mwmkravchenko** · Feb 12, 2022, 05:42 PM

This I will make!

**nova_robotics** · Feb 12, 2022, 07:22 PM

Originally Posted by mwmkravchenko

This I will make!

Me too. This is a thing of beauty.

**Karl_H** · Feb 13, 2022, 07:14 AM

Originally Posted by mwmkravchenko

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)

**mwmkravchenko** · Feb 13, 2022, 08:40 AM

Originally Posted by Karl_H

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.

**mwmkravchenko** · Feb 13, 2022, 08:46 AM

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.

**nova_robotics** · Feb 14, 2022, 03:41 AM

Originally Posted by mwmkravchenko

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.

**Frank S** · Feb 14, 2022, 06:41 AM

Originally Posted by nova_robotics

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

**mwmkravchenko** · Feb 14, 2022, 03:52 PM

Originally Posted by nova_robotics

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.

**mwmkravchenko** · Feb 14, 2022, 03:53 PM

Originally Posted by Frank S

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!