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Power tapping

 

I use this sometimes when power tapping for maybe a # 10 & up



they work pretty good & their great if doing as bunch of repetitive drilling with different size bits .



animal
 

I do most power on? all sizes of tapping .
I have a drum switch for tapping on my mill for work.?

Dave?
 

Here photo?
 

Years ago (perhaps as much as 70) Model Engineer ran an article on building a releasing power tapping machine from a Sturmey Archer three speed hub gear! I have not been able to find it since. Anyone who gets lucky please post the location.? ?Bill


On Sun, Mar 17, 2024 at 11:30?PM davesmith1800 <davesmith1@...> wrote:
Here photo?

Attachments:
 

I had power tapers heads and use in gear drill press , I did do thousands of tap holes too.?

When doing my own work just the mill or drill for tapping.? The drill chuck was the safety clutch.? You just did not tighten the chuck.?
Just tighten enough so tap works and if hits bottom the tap slips in the chuck.?
Using the chuck as a safety clutch.

Dave?

Bill Williams
9:38pm? ?
Years ago (perhaps as much as 70) Model Engineer ran an article on building a releasing power tapping machine
 

Two transformer.
Golf carts use 36 or 48 volt transformer?






Dave?
 

All you guys have far more experience than me at tapping, so can you answer me a question I've wondered about for years?? ?How do you know when a tap is wearing out? I know new? taps but far easier than worn taps but looking at them I can't tell the difference between them. (Or maybe I don't know what to look for).

Mike Taglieri?

On Mon, Mar 18, 2024, 1:26 AM davesmith1800 <davesmith1@...> wrote:
I do most power on? all sizes of tapping .
I have a drum switch for tapping on my mill for work.?

Dave?

 

It is by feel.
The tap feels springy?
You also feel this springy feel is lack of cutting oil or wrong oil.?
Also feel cutting edge?

This springy feel is tap about to break.?

Need to use dark cutting oil for steel and most metals.?
Tool steel and 400 stainless only use a new taps.?

Dave?



Miket_NYC
5:00am? ?
All you guys have far more experience than me at tapping, so can you answer me a question I've wondered about for years? How do you know when a tap is wearing out? I know new
 

FYI?
Power tapping is different.?
You have no feel and guy doing tapping does not know anything.??

This only by checking the edge of tap.

I can feel the tap head if tap is getting dull but the guy doing most tapping can not.
Most of it is? first time tapping.

We did a lot tapping from 1/2NC to 7/8NF on blanks cost from $10.00 to thousands.? You get good at tap removal.? But use on this size I would use fluxcore and remove the tap.
This trick will not work on smaller tap sizes

Dave?
 

I have a these -
Mine are the original Walton.? I talked to them a while back and the company that sold them the unhardened tap handle (so the could drill the holes in the sides) stopped selling them.

Lo and Behold, knock offs start showing up on ebay.? Viper had a tutorial on using it on his Youtube page that seems to be gone now.

On the mill or drill press I use a Tapmatic tapping head

On 3/20/2024 10:44 AM, davesmith1800 wrote:
FYI
Power tapping is different.
You have no feel and guy doing tapping does not know anything.

This only by checking the edge of tap.

I can feel the tap head if tap is getting dull but the guy doing most tapping can not.
Most of it is? first time tapping.

We did a lot tapping from 1/2NC to 7/8NF on blanks cost from $10.00 to thousands.? You get good at tap removal.? But use on this size I would use fluxcore and remove the tap.
This trick will not work on smaller tap sizes

Dave
 

Set of two sizes here

On 3/20/2024 11:28 AM, WAM via groups.io wrote:
I have a these -
Mine are the original Walton.? I talked to them a while back and the company that sold them the unhardened tap handle (so the could drill the holes in the sides) stopped selling them.

Lo and Behold, knock offs start showing up on ebay.? Viper had a tutorial on using it on his Youtube page that seems to be gone now.

On the mill or drill press I use a Tapmatic tapping head




On 3/20/2024 10:44 AM, davesmith1800 wrote:
FYI
Power tapping is different.
You have no feel and guy doing tapping does not know anything.

This only by checking the edge of tap.

I can feel the tap head if tap is getting dull but the guy doing most tapping can not.
Most of it is? first time tapping.

We did a lot tapping from 1/2NC to 7/8NF on blanks cost from $10.00 to thousands.? You get good at tap removal.? But use on this size I would use fluxcore and remove the tap.
This trick will not work on smaller tap sizes

Dave
 

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Bill here's some info for ya , I think th ethird post with a link is the issue ya want .

animal

On 3/19/24 9:37 PM, Bill Williams wrote:

Years ago (perhaps as much as 70) Model Engineer ran an article on building a releasing power tapping machine from a Sturmey Archer three speed hub gear! I have not been able to find it since. Anyone who gets lucky please post the location.? ?Bill

On Sun, Mar 17, 2024 at 11:30?PM davesmith1800 <davesmith1@...> wrote:
Here photo?

Attachments:
 

General tools used to make a sell a pretty nice 3 piece set of tap
handles . they were like these with eh 2 jaws that grabbed the tap
instead of the threaded , bored & the split cross ways like most cheap
tap sets come with . They were like these Wam mentioned but without the
short shaft that goes into a chuck if needed . A good tap handle is a
huge plus towards getting a thread .

animal

On 3/20/24 8:34 AM, WAM wrote:
Set of two sizes here




On 3/20/2024 11:28 AM, WAM via groups.io wrote:
I have a these -

Mine are the original Walton.? I talked to them a while back and the
company that sold them the unhardened tap handle (so the could drill
the holes in the sides) stopped selling them.

Lo and Behold, knock offs start showing up on ebay.? Viper had a
tutorial on using it on his Youtube page that seems to be gone now.

On the mill or drill press I use a Tapmatic tapping head




On 3/20/2024 10:44 AM, davesmith1800 wrote:
FYI
Power tapping is different.
You have no feel and guy doing tapping does not know anything.

This only by checking the edge of tap.

I can feel the tap head if tap is getting dull but the guy doing
most tapping can not.
Most of it is? first time tapping.

We did a lot tapping from 1/2NC to 7/8NF on blanks cost from $10.00
to thousands.? You get good at tap removal.? But use on this size I
would use fluxcore and remove the tap.
This trick will not work on smaller tap sizes

Dave

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