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9/16 bushing x .0125 key way broach

 

I am attempting to mill a series of gears to use to single point? metric screws
on my SB 9A.
?
Said gears want to have a 9/16 center hole with a .0125 key way.
?
I am in need of a 9/16 bushing with a .0125 slot.
?
Might anyone have one that is superfluous to their needs?
?
Thanks.
?
Alan
?
 

¿ªÔÆÌåÓý

I think you mean 0.125.?
At least that¡¯s what I used.?
I used to have one but it went to the scraper when I moved to FL and a condo. ?

Jim B,

On Apr 26, 2025, at 8:26?AM, Al Costich via groups.io <alcostich@...> wrote:

?
I am attempting to mill a series of gears to use to single point? metric screws
on my SB 9A.
?
Said gears want to have a 9/16 center hole with a .0125 key way.
?
I am in need of a 9/16 bushing with a .0125 slot.
?
Might anyone have one that is superfluous to their needs?
?
Thanks.
?
Alan
?

--
Jim B
 

Jim B and others
?
>>>I think you mean 0.125.?
?
My bad. Yes .125 is what I need.
Sorry. Recent cataract has left me temporarily blind in one eye.?
?
And, yes, if I need to make one, I do have a lathe and a mill.
?
A few years ago I did make several gears.
I just can't remember how I cut the key way.
?
Alan
 

I have a broaching set and can make those pretty easily.? Email me directly if you're interested, I'm sure we can work something out.

You can also broach on your lathe, though, with single-point tooling.? Skip to about 5:20 in this video to see the actual broaching bit (although the whole video is worth watching):


--Rogan


On Sat, Apr 26, 2025 at 12:32?PM Al Costich via <alcostich=[email protected]> wrote:
Jim B and others
?
>>>I think you mean 0.125.?
?
My bad. Yes .125 is what I need.
Sorry. Recent cataract has left me temporarily blind in one eye.?
?
And, yes, if I need to make one, I do have a lathe and a mill.
?
A few years ago I did make several gears.
I just can't remember how I cut the key way.
?
Alan
 

It's not that difficult to make a keyway for this purpose using a hacksaw & files.

?

Eddie

?

------ Original Message ------
From: creswick@...
To: [email protected]
Sent: Saturday, April 26th 2025, 20:42
Subject: Re: [SouthBendLathe] 9/16 bushing x .0125 key way broach
?

I have a broaching set and can make those pretty easily.? Email me directly if you're interested, I'm sure we can work something out.

?
You can also broach on your lathe, though, with single-point tooling.? Skip to about 5:20 in this video to see the actual broaching bit (although the whole video is worth watching):
?
?
--Rogan
?


?

On Sat, Apr 26, 2025 at 12:32?PM Al Costich via <alcostich=[email protected]> wrote:
?
Jim B and others
?
>>>I think you mean 0.125.?
?
My bad. Yes .125 is what I need.
Sorry. Recent cataract has left me temporarily blind in one eye.?
?
And, yes, if I need to make one, I do have a lathe and a mill.
?
A few years ago I did make several gears.
I just can't remember how I cut the key way.
?
Alan

?

?
 

You can use the carriage of your lathe as a hand-driven shaper, if you only need to cut a keyway occaisionally.?

You could drill out most of the waste if you do that before drilling/reaming the ID of the bushing. And you could file it out by hand if you're desperate. :)

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement.?
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better.
Expect in one hand, expectorate in the other. See which one gets full first.



On Saturday, April 26, 2025 at 02:32:12 PM CDT, Al Costich via groups.io <alcostich@...> wrote:


Jim B and others
?
>>>I think you mean 0.125.?
?
My bad. Yes .125 is what I need.
Sorry. Recent cataract has left me temporarily blind in one eye.?
?
And, yes, if I need to make one, I do have a lathe and a mill.
?
A few years ago I did make several gears.
I just can't remember how I cut the key way.
?
Alan

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