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Re: Armstrong threading tool (was "[LL] Lantern toolpost dimensions")

 

Here a few photos?
Re: Armstrong threading tool (was "[LL] Lantern toolpost dimensions")

 

The??Armstrong tool holders are 3/4" to 7/8" for small lathes you can mill down to fit a Aloris AXA 1/2" tool bit holder.?
Now you can adjust the Armstrong tool holders and not need the American tool holder.?

They can come handy for some types of work.

Dave?
Re: Armstrong threading tool (was "[LL] Lantern toolpost dimensions")

 

Aloris use to make a holder for threading back 1970's.?
But most use carbide today or just sharpen HSS tool bits.?

Dave?
Re: Armstrong threading tool (was "[LL] Lantern toolpost dimensions")

 

An? excellent tool, I have had and used one since 1967. You might want to make a QC fixture?to support the cutting tool in your QC toolpost. You can make your own form tools to work the same way!? ?Bill in Boulder


On Fri, Feb 16, 2024 at 6:00?AM Miket_NYC <mctaglieri@...> wrote:
"The Armstrong threading tool where it's kept sharp by honing the top as the tool wears."

I recently got one of these threading tools also (though I think mine is Williams brand rather than Armstrong). It's a great idea: a disk with a 60¡ã angle turned on the edge that you rotate as it wears down. You sharpen it only on top. The head is also canted at the correct angle for threading.

I don't want to use a lantern tool post, but there's no reason this can't be clamped somehow onto the regular compound.

Here are two photos taken from ebay. (This is not my tool, but looks similar).




Mike Taglieri?



On Tue, Feb 13, 2024, 10:26 AM Ron K via <ron.kellis=[email protected]> wrote:
It does! Thanks. I have two tools I'd like to try just for my own knowledge.
The Armstrong threading tool where it's kept sharp by honing the top as the tool wears.
An Armstrong goose neck parting tool with the anti-chatter notch. Too many "I'm a gunna." projects in the queue to make one like Mark did, but I've always been curious.?

Again, thanks!

Ron

Attachments:
Armstrong threading tool (was "[LL] Lantern toolpost dimensions")

 

"The Armstrong threading tool where it's kept sharp by honing the top as the tool wears."

I recently got one of these threading tools also (though I think mine is Williams brand rather than Armstrong). It's a great idea: a disk with a 60¡ã angle turned on the edge that you rotate as it wears down. You sharpen it only on top. The head is also canted at the correct angle for threading.

I don't want to use a lantern tool post, but there's no reason this can't be clamped somehow onto the regular compound.

Here are two photos taken from ebay. (This is not my tool, but looks similar).




Mike Taglieri?



On Tue, Feb 13, 2024, 10:26 AM Ron K via <ron.kellis=[email protected]> wrote:
It does! Thanks. I have two tools I'd like to try just for my own knowledge.
The Armstrong threading tool where it's kept sharp by honing the top as the tool wears.
An Armstrong goose neck parting tool with the anti-chatter notch. Too many "I'm a gunna." projects in the queue to make one like Mark did, but I've always been curious.?

Again, thanks!

Ron

20240117_144757~2.jpg

Re: Linear Digital Readout Scales

 

It will work for new manager too.

Like airport in Reno I spent all time airport.? The airport has lot of my doors.

Dave?

mike allen
9:04pm? ?
What are the odds of a Harbor Freight still having the same manager from one week to the next ? They may even have book on that in Vegas .
We have 2 HF's in Reno one go's through managers just like 20 % off coupons . The other one is more stable
Re: Linear Digital Readout Scales

 

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What are the odds of a Harbor Freight? still having the same manager from one week to the next ? They may even have book on that in Vegas .

We have 2 HF's in Reno one go's through managers just like 20 % off coupons . The other one is more stable .

animal

On 2/15/24 8:15 PM, davesmith1800 wrote:

Cheaper is not best?
Need the $20.00 for quality as I found out the hard way aka return.
Harbor Freight is easy you see manager in your leathers and he quickly fix the problem?

Dave?

Re: Linear Digital Readout Scales

 

Cheaper is not best?
Need the $20.00 for quality as I found out the hard way aka return.
Harbor Freight is easy you see manager in your leathers and he quickly fix the problem?

Dave?
Re: Ball bearing life why so short?

 

David Everett
1:26am???

Agreed.
Go for a known quality brand.? SKF or NSK as a couple of examples.

Dave
The Emerald Isle
Thank you all .

It looks look the bearing are ABEC 1 OR lower.

I have size in? NSK and maybe SKF ll in ABEC-3 or better I will save the best when needing to replace.?

Dave?


?
Re: Ball bearing life why so short?

 

Here a few charts on ABEC 3 and ABEC 9
The ABEC 3 is motor grade ball bearing.?
The ABEC 9 is mainly use in machine tools.




https://www.engineersedge.com/bearing/ball_bearings_tolerances.htm
Re: Ball bearing life why so short?

 

Here price for a abec-7 7206?



All bears I purchased for doors was ABEC-3. It was for a press fit and low quality could give problems in installing the bearings.?

Dave?
Re: Ball bearing life why so short?

 

The ABEC rating mostly refers to tiny differences in runout, with higher numbers being microscopically more precise & astronomically pricier.

?<??>

Roy
Re: Linear Digital Readout Scales

 

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??? ??? 20 bucks gets ya a 4" digital at Harbor Freight a couple bucks more gets ya the 6"

Probably cheaper ones on the big A but at least ya can walk into a Harbor if theres a issue .

animal

On 2/15/24 6:26 PM, OldToolmaker via groups.io wrote:

I am looking for some short linear digital scales to mount on a small lathe like a Shereline. I am hoping to find something on the order of ¡°cut-off¡± digital caliper.
Could anyone suggest a good source? I want to avoid any wires and prefer a button battery type.
Dick

Re: Ball bearing life why so short?

 

I have purchased the ABEC-9 class for rebuilding a mill head. The ball bearings companies low that class. I think I could buy new lathe cheaper.?

Dave?
Re: Ball bearing life why so short?

 

I've always thought it was from improper pre-load! Getting the pre-load right is finicky & usually requires several iterations to get right, something not done by the factory.? What you want is no measurable axial play & minimal bearing heating at full speed.

A reasonable upgrade is to replace the bearings with 7206, an angular contact bearing that's the same size as the 6206 deep groove bearings originally installed. They're available sealed,? to keep crud out. They can handle a higher axial load than their deep groove counterparts without the hassle of converting to unsealed taper? roller bearings.

?<??>

Roy (retired M.E.)
Re: Linear Digital Readout Scales

 

If look at photo of my mill I used a low cost digital caliper from Harbor Freight?

Dave?
Re: Linear Digital Readout Scales

 

Try my thread on portable DRO'S.??
/g/7x12MiniLathe/message/118787

I have mounted a temp DRO'S to lathe pass for primary dealing with snap rings.
Low cost digital caliper can used too.

Dave?
Re: Ball bearing life why so short?

 


?
Just the quality of mini lathe if spent $10.00 lathe upgrade on Spindle bearings 4" crosss feed travel and DC power feed?

The wholesale price of lathe is $300.00 retail is $600.0 a incress the retail to $620.00

What difference in the lathe

Dave?




mike allen
Feb 14???

??? ??? Cause its probably the cheapest 6206 bearing they could find .

??? animal
Linear Digital Readout Scales

 

I am looking for some short linear digital scales to mount on a small lathe like a Shereline. I am hoping to find something on the order of ¡°cut-off¡± digital caliper.
Could anyone suggest a good source? I want to avoid any wires and prefer a button battery type.
Dick
Re: Ball bearing life why so short?

 

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??? Spindle bearings in the ABEC-9 class are one of the best ya can get , & the price confirms it .

??? animal

On 2/15/24 5:03 PM, davesmith1800 wrote:

I agree they use cheapest they can find.

Dave?

mike allen
Feb 14? ?
? ? ? ? Cause its probably the cheapest 6206 bearing they could find .
? ? animal
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