I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
made in
Taiwan. Their current version is the CMD1225C which, I'm told, is made
in China.

I'd always assumed that the screw threads were UNC but, when I tried
to fit
new 1/2" UNC nuts to the column clamp bolts, they didn't fit. The
bolts
measure 12 TPI, i.e. 1/2" Whit pitch (UNC is 13 TPI); so do the 1/2"
socket
cap screws which bolt the column to the base.

Is it common for Taiwanese/Chinese m/c tool manufacturers to use
Whitworth?

Whilst on the subject of Whit and UNC (for diameters where the thread
pitches
are the same) I've read lots of dire warnings about mixing male and
female of
different thread forms. I'm quite sure that I've occasionally mixed
them and
not noticed any resultant problem but they haven't been precision
fasteners
torqued to the eyeballs.

Has anyone had known problems when mixing thread forms?

Bob

How do you check the thread form? From having to identify unknown threads at 
work for either 'homework' jobs to millwrights not knowing what to order as 
replacements I would suggest your Chinese Whitworth is in fact a M12 x 2 
thread? I would think that most Chinese threads would be Metric. Most US 
threads being UN and European being either Metric or Imperial. There are 
many different thread forms out there and are not just Whitworth or UN. I 
use a shadowgraph at work which I know is not the type of kit you would have 
at home, thread 'combs' are ok but not totally reliable.

As for mixing thread forms, yes you can if you are desperate but I wouldn't, 
as it's simply not good engineering. Joseph Whitworth ( 
http://en.wikipedia.org/wiki/Joseph_Whitworth ) introduced standardisation 
for a reason, i.e. to make things standard so interchangeability can be 
achieved.

Andy

On Wed, 27 Aug 2008 14:28:42 -0700 (PDT), BobKellock
 wrote:

>I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
>made in
>Taiwan. Their current version is the CMD1225C which, I'm told, is made
>in China.
>
>I'd always assumed that the screw threads were UNC but, when I tried
>to fit
>new 1/2" UNC nuts to the column clamp bolts, they didn't fit. The
>bolts
>measure 12 TPI, i.e. 1/2" Whit pitch (UNC is 13 TPI); so do the 1/2"
>socket
>cap screws which bolt the column to the base.
>
>Is it common for Taiwanese/Chinese m/c tool manufacturers to use
>Whitworth?
>
>Whilst on the subject of Whit and UNC (for diameters where the thread
>pitches
>are the same) I've read lots of dire warnings about mixing male and
>female of
>different thread forms. I'm quite sure that I've occasionally mixed
>them and
>not noticed any resultant problem but they haven't been precision
>fasteners
>torqued to the eyeballs.
>
>Has anyone had known problems when mixing thread forms?
>
>Bob
Greetings Bob,
1/2-12 is an obsolete thread form that was used in the USA. It is a 60
degree thread form. Taps are still available. I have only seen this
thread on old machines and taiwanese machines.
Cheers,
Eric

On or around Wed, 27 Aug 2008 14:28:42 -0700 (PDT), BobKellock
 enlightened us thusly:

>I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
>made in
>Taiwan. Their current version is the CMD1225C which, I'm told, is made
>in China.

similar machine here has typically-bad metric threads.  The cheapo machines
often have poorly-sized or poorly-made nuts and bolts.

-- 
Austin Shackles.  www.ddol-las.net  my opinions are just that
Travel The Galaxy!  Meet Fascinating Life Forms...
------------------------------------------------\   
   >>  http://www.schlockmercenary.com/  <<      \  ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!

On 28 Aug, 01:49, e...@whidbey.com wrote:
> On Wed, 27 Aug 2008 14:28:42 -0700 (PDT), BobKellock
>
>
>
>
>
>  wrote:
> >I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
> >made in
> >Taiwan. Their current version is the CMD1225C which, I'm told, is made
> >in China.
>
> >I'd always assumed that the screw threads were UNC but, when I tried
> >to fit
> >new 1/2" UNC nuts to the column clamp bolts, they didn't fit. The
> >bolts
> >measure 12 TPI, i.e. 1/2" Whit pitch (UNC is 13 TPI); so do the 1/2"
> >socket
> >cap screws which bolt the column to the base.
>
> >Is it common for Taiwanese/Chinese m/c tool manufacturers to use
> >Whitworth?
>
> >Whilst on the subject of Whit and UNC (for diameters where the thread
> >pitches
> >are the same) I've read lots of dire warnings about mixing male and
> >female of
> >different thread forms. I'm quite sure that I've occasionally mixed
> >them and
> >not noticed any resultant problem but they haven't been precision
> >fasteners
> >torqued to the eyeballs.
>
> >Has anyone had known problems when mixing thread forms?
>
> >Bob
>
> Greetings Bob,
> 1/2-12 is an obsolete thread form that was used in the USA. It is a 60
> degree thread form. Taps are still available. I have only seen this
> thread on old machines and taiwanese machines.
> Cheers,
> Eric- Hide quoted text -
>
> - Show quoted text -

I also have a problem with non-standard 'standard' parts on my
recently obtained Warco A1S knee mill - not with the nuts'n'bolts, but
with the drive belts.

The original belts are clearly numbered B35 & B41, I obtained
replacements from the local branch of BSL and the new ones are miles
too long.

I've just completed the New enclosure for the VFD from my old mill/
drill - this week I got it fixed to the wall, changed the motor and
wired it all up.

I spent a lot of time yesterday packing out the motor mounts with
spacers to take up the slack but even with the extra inch or so that I
gained the belts are still far too slack and I cannot move the motor
back any further due to it fouling the rear of the belt guard - I
guess I'm just gonna have to get some more belts.........

Has anyone else had this problem? - if so what is the correct belt
size and type.

Thanks and Regards

Barry

PS - I hope that this message is not considered to be off topic - if
so I apologise to Bob........

On Aug 28, 8:44 am, BarryK  wrote:
> On 28 Aug, 01:49, e...@whidbey.com wrote:
>
>
>
>
>
> > On Wed, 27 Aug 2008 14:28:42 -0700 (PDT), BobKellock
>
> >  wrote:
> > >I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
> > >made in
> > >Taiwan. Their current version is the CMD1225C which, I'm told, is made
> > >in China.
>
> > >I'd always assumed that the screw threads were UNC but, when I tried
> > >to fit
> > >new 1/2" UNC nuts to the column clamp bolts, they didn't fit. The
> > >bolts
> > >measure 12 TPI, i.e. 1/2" Whit pitch (UNC is 13 TPI); so do the 1/2"
> > >socket
> > >cap screws which bolt the column to the base.
>
> > >Is it common for Taiwanese/Chinese m/c tool manufacturers to use
> > >Whitworth?
>
> > >Whilst on the subject of Whit and UNC (for diameters where the thread
> > >pitches
> > >are the same) I've read lots of dire warnings about mixing male and
> > >female of
> > >different thread forms. I'm quite sure that I've occasionally mixed
> > >them and
> > >not noticed any resultant problem but they haven't been precision
> > >fasteners
> > >torqued to the eyeballs.
>
> > >Has anyone had known problems when mixing thread forms?
>
> > >Bob
>
> > Greetings Bob,
> > 1/2-12 is an obsolete thread form that was used in the USA. It is a 60
> > degree thread form. Taps are still available. I have only seen this
> > thread on old machines and taiwanese machines.
> > Cheers,
> > Eric- Hide quoted text -
>
> > - Show quoted text -
>
> I also have a problem with non-standard 'standard' parts on my
> recently obtained Warco A1S knee mill - not with the nuts'n'bolts, but
> with the drive belts.
>
> The original belts are clearly numbered B35 & B41, I obtained
> replacements from the local branch of BSL and the new ones are miles
> too long.
>
> I've just completed the New enclosure for the VFD from my old mill/
> drill - this week I got it fixed to the wall, changed the motor and
> wired it all up.
>
> I spent a lot of time yesterday packing out the motor mounts with
> spacers to take up the slack but even with the extra inch or so that I
> gained the belts are still far too slack and I cannot move the motor
> back any further due to it fouling the rear of the belt guard - I
> guess I'm just gonna have to get some more belts.........
>
> Has anyone else had this problem? - if so what is the correct belt
> size and type.
>
> Thanks and Regards
>
> Barry
>
> PS - I hope that this message is not considered to be off topic - if
> so I apologise to Bob........- Hide quoted text -
>
> - Show quoted text -

Barry

I had the same problem on my A1S.  My local "Belts and Bearings" chap
"lent me" a selection of British "B section' belts, after he measured
the originals and said they weren't the size printed on them.

By a series of trials and errors, I managed to get two that allowed
adjustment, if a little tight to get on the pulleys.

Next size up on either belt and I run out of tension adjustment on the
motor "swing".  As I have a VFD./3-phase motor set-up, I seldom change
the belt unless using a very much larger/smaller end-mill/fly cutter.

My belts sizes are now :-
B39 Spindle to Mid.
B34 Motor to Mid.

Regards
Andy

On Aug 28, 6:20 pm, houstonceng  wrote:
> On Aug 28, 8:44 am, BarryK  wrote:
>
>
>
>
>
> > On 28 Aug, 01:49, e...@whidbey.com wrote:
>
> > > On Wed, 27 Aug 2008 14:28:42 -0700 (PDT), BobKellock
>
> > >  wrote:
> > > >I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
> > > >made in
> > > >Taiwan. Their current version is the CMD1225C which, I'm told, is made
> > > >in China.
>
> > > >I'd always assumed that the screw threads were UNC but, when I tried
> > > >to fit
> > > >new 1/2" UNC nuts to the column clamp bolts, they didn't fit. The
> > > >bolts
> > > >measure 12 TPI, i.e. 1/2" Whit pitch (UNC is 13 TPI); so do the 1/2"
> > > >socket
> > > >cap screws which bolt the column to the base.
>
> > > >Is it common for Taiwanese/Chinese m/c tool manufacturers to use
> > > >Whitworth?
>
> > > >Whilst on the subject of Whit and UNC (for diameters where the thread
> > > >pitches
> > > >are the same) I've read lots of dire warnings about mixing male and
> > > >female of
> > > >different thread forms. I'm quite sure that I've occasionally mixed
> > > >them and
> > > >not noticed any resultant problem but they haven't been precision
> > > >fasteners
> > > >torqued to the eyeballs.
>
> > > >Has anyone had known problems when mixing thread forms?
>
> > > >Bob
>
> > > Greetings Bob,
> > > 1/2-12 is an obsolete thread form that was used in the USA. It is a 60
> > > degree thread form. Taps are still available. I have only seen this
> > > thread on old machines and taiwanese machines.
> > > Cheers,
> > > Eric- Hide quoted text -
>
> > > - Show quoted text -
>
> > I also have a problem with non-standard 'standard' parts on my
> > recently obtained Warco A1S knee mill - not with the nuts'n'bolts, but
> > with the drive belts.
>
> > The original belts are clearly numbered B35 & B41, I obtained
> > replacements from the local branch of BSL and the new ones are miles
> > too long.
>
> > I've just completed the New enclosure for the VFD from my old mill/
> > drill - this week I got it fixed to the wall, changed the motor and
> > wired it all up.
>
> > I spent a lot of time yesterday packing out the motor mounts with
> > spacers to take up the slack but even with the extra inch or so that I
> > gained the belts are still far too slack and I cannot move the motor
> > back any further due to it fouling the rear of the belt guard - I
> > guess I'm just gonna have to get some more belts.........
>
> > Has anyone else had this problem? - if so what is the correct belt
> > size and type.
>
> > Thanks and Regards
>
> > Barry
>
> > PS - I hope that this message is not considered to be off topic - if
> > so I apologise to Bob........- Hide quoted text -
>
> > - Show quoted text -
>
> Barry
>
> I had the same problem on my A1S.  My local "Belts and Bearings" chap
> "lent me" a selection of British "B section' belts, after he measured
> the originals and said they weren't the size printed on them.
>
> By a series of trials and errors, I managed to get two that allowed
> adjustment, if a little tight to get on the pulleys.
>
> Next size up on either belt and I run out of tension adjustment on the
> motor "swing".  As I have a VFD./3-phase motor set-up, I seldom change
> the belt unless using a very much larger/smaller end-mill/fly cutter.
>
> My belts sizes are now :-
> B39 Spindle to Mid.
> B34 Motor to Mid.
>
> Regards
> Andy- Hide quoted text -
>
> - Show quoted text -

Oh.  I should also say that, according to the same expert, the pulleys
on Taiwanese & Chinese Machine Tools aren't always correct to
profile.  The (supposedly) "A" section pulley on my lathe motor
allowed the belt to sit near flush.  He said it was newarer
"agricultural profile" than "A".  When I replaced the 1-phase motor
with a 3-phase/VFD on my Warco 1327 lathe (Taiwanese) I had to get a
new pulley to suit the motor spindle size difference.  Despite packing
the new motor out to give the same spindle position, I had to source
two new belts one size up.

BTW. Same expert said his belts are actually measured in metric and
labeled to the nearest inch.  When I was sourcing a belt for another
application, he was able to calculate the belt size for me if I gave
him the pulley diameters and centre to centre distance.  He converted
my imperial sizes to metric first.  Even so, the size calculated was
one size too small in "Inch belts".

Andy

>
> Greetings Bob,
> 1/2-12 is an obsolete thread form that was used in the USA. It is a 60
> degree thread form. Taps are still available. I have only seen this
> thread on old machines and taiwanese machines.
> Cheers,
> Eric

Load of rubbish.1/2" x 12 tpi is BSW or British Standard Whitworth and
it is 55 degrees. USA have never used 12 tpi preferring 13 tpi x 1/2"
for UNC threads.

On Thu, 28 Aug 2008 13:13:01 -0700 (PDT), "mark@ems-fife.co.uk"
 wrote:

>
>>
>> Greetings Bob,
>> 1/2-12 is an obsolete thread form that was used in the USA. It is a 60
>> degree thread form. Taps are still available. I have only seen this
>> thread on old machines and taiwanese machines.
>> Cheers,
>> Eric
>
>Load of rubbish.1/2" x 12 tpi is BSW or British Standard Whitworth and
>it is 55 degrees. USA have never used 12 tpi preferring 13 tpi x 1/2"
>for UNC threads.
>
Fine. Whatever you say. I guess my antique lathes were threaded
Whitworth but the idiot doing the threading thought that Whitworth
threads were 60 degree thread form. Just for kicks try looking at
Machinery's Handbook for the thread info. My 1918 edition has 1/2-12
listed as do my 1980s and 1990s editions. And taps are still
available. Try
http://www.jlindustrial.com/TSP-15344A/SEARCH:KEYWORD/product.html . I
guess J&L are making Whitworth threads with 60 degree thread form too.
ERS

from etpm@whidbey.com contains these words:
>  wrote:

> >> Greetings Bob,
> >> 1/2-12 is an obsolete thread form that was used in the USA. It is a 60
> >> degree thread form. Taps are still available. I have only seen this
> >> thread on old machines and taiwanese machines.
> >> Cheers,
> >> Eric
> >
> >Load of rubbish.1/2" x 12 tpi is BSW or British Standard Whitworth and
> >it is 55 degrees. USA have never used 12 tpi preferring 13 tpi x 1/2"
> >for UNC threads.
> >
> Fine. Whatever you say. I guess my antique lathes were threaded
> Whitworth but the idiot doing the threading thought that Whitworth
> threads were 60 degree thread form. Just for kicks try looking at
> Machinery's Handbook for the thread info. My 1918 edition has 1/2-12
> listed as do my 1980s and 1990s editions. And taps are still
> available. Try
> http://www.jlindustrial.com/TSP-15344A/SEARCH:KEYWORD/product.html . I
> guess J&L are making Whitworth threads with 60 degree thread form too.
> ERS

You need to re-apraise the way you read Machiery's handbook then. My
1923 Edition lists only 1/2" x 13 in the "United States Standard Thread"
but it does list 1/2" x 12 in the non-standard 'Sharp 'V'' form. 

The latest edition still makes a reference to the Sharp V form but it
amounts to only 6 lines and comments upon the form being non-standard.

The Unified form in both Course and Fine series is what one would take
as the reference when discussing Screw Thread Series today and under
that standard 1/2" has always been 13 tpi  -  from 1/8" upward it is the
only one in the series that differs from BSW and that's the reason it
stands out.

The form of the thread essentially has no connection with the
diameter/pitch relationship of any thread series so it is fatuous to
refer to a 60° 'Whitworth' form.

Just because J&L offer 1/2" x 12 taps does not mean that they are 'Standard'.

Machinery's Handbook also lists the elements of the 'fixed pitch' series
which includes 12 tpi bu oddly enough it starts at 9/16"  -  so 1/2" x
12 doesn't even qualify there.

JG

s.
>
> Fine. Whatever you say. I guess my antique lathes were threaded
> Whitworth but the idiot doing the threading thought that Whitworth
> threads were 60 degree thread form. Just for kicks try looking at
> Machinery's Handbook for the thread info. My 1918 edition has 1/2-12
> listed as do my 1980s and 1990s editions. And taps are still
> available. Tryhttp://www.jlindustrial.com/TSP-15344A/SEARCH:KEYWORD/product.html. I
> guess J&L are making Whitworth threads with 60 degree thread form too.
> ERS

Of course 1/2" x 12 tpi are listed.It`s a standard thread.Not
preferred anymore but a standard just the same.If you look at a
British built machine,made pre 1970 it will be all BSW with a bit of
BSF.
As for finding BSW with 60 degree threads,no chance because if they`re
not 55 deg. there not BSW.

/SEARCH:KEYWORD/product.html. I
> guess J&L are making Whitworth threads with 60 degree thread form too.
> ERS

Where does it say on the description that they are 60 degrees?

On Thu, 28 Aug 2008 23:55:05 -0700 (PDT), "mark@ems-fife.co.uk"
 wrote:

>/SEARCH:KEYWORD/product.html. I
>> guess J&L are making Whitworth threads with 60 degree thread form too.
>> ERS
>
>Where does it say on the description that they are 60 degrees?
>
It doesn't. But I bought one of these a while back to make some nuts
for a Taiwanese grinder.
ERS

In article ,
Austin Shackles   wrote:
>On or around Wed, 27 Aug 2008 14:28:42 -0700 (PDT), BobKellock
> enlightened us thusly:
>
>>I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
>>made in
>>Taiwan. Their current version is the CMD1225C which, I'm told, is made
>>in China.
>
>similar machine here has typically-bad metric threads.  The cheapo machines
>often have poorly-sized or poorly-made nuts and bolts.

My 1920s Lorch-Schmidt lathe has a mandrel thread which has OD 0.995"
and using one of those thread gauges (not a projector) appears to be
about 10tpi.  It's not BSF (as for some reason I have a 1" BSF tap) and it
looks like the included angle of the thread is 60 degrees rather than 55.
I've never managed to find a standard thread of this form (UNC is 8tpi
and UNF 12tpi).  The rest of the lathe is metric with right handed 1.5mm
pitch screws on tailstock and slides.

Is this likely to be a Lorch-Schmidt special?

Alan

"Alan Bain" <alanb+news@chiark.greenend.org.uk> wrote in message 
news:Nif*pJHls@news.chiark.greenend.org.uk...
> In article ,
> Austin Shackles   wrote:
>>On or around Wed, 27 Aug 2008 14:28:42 -0700 (PDT), BobKellock
>> enlightened us thusly:
>>
>>>I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
>>>made in
>>>Taiwan. Their current version is the CMD1225C which, I'm told, is made
>>>in China.
>>
>>similar machine here has typically-bad metric threads.  The cheapo 
>>machines
>>often have poorly-sized or poorly-made nuts and bolts.
>
> My 1920s Lorch-Schmidt lathe has a mandrel thread which has OD 0.995"
> and using one of those thread gauges (not a projector) appears to be
> about 10tpi.  It's not BSF (as for some reason I have a 1" BSF tap) and it
> looks like the included angle of the thread is 60 degrees rather than 55.
> I've never managed to find a standard thread of this form (UNC is 8tpi
> and UNF 12tpi).  The rest of the lathe is metric with right handed 1.5mm
> pitch screws on tailstock and slides.
>
> Is this likely to be a Lorch-Schmidt special?
>
> Alan
I think 1"-10 is a fairly common lathe spindle thread, especially for wood 
lathes. All these odd thread discussions are interesting to me. You have to 
understand that most of the "standards" seem to be for fasteners such as 
nuts and bolts but a lot of other things are threaded also. I personally 
think that threads range all the way from "only one example known" or "does 
not come out to any known common dimension or pitch" to "only known to be 
used by one manufacturer on one product" all the way to "billions and 
billions sold".

I think it would be cool to thread a rod .864"-17 1/5 tpi with a 23 degree 
thread angle on one side and 38 degree angle on the other. (Now that I think 
about I believe one of my first threads was something like that :>).)

I have quite a few taps and dies that do not conform to the current 
recommended standards but I am sure that they were used somewhere at some 
time.

Don Young (USA)

On or around Fri, 29 Aug 2008 21:05:43 -0500, "Don Young"
 enlightened us thusly:

>> Alan
>I think 1"-10 is a fairly common lathe spindle thread, especially for wood 
>lathes. All these odd thread discussions are interesting to me. You have to 
>understand that most of the "standards" seem to be for fasteners such as 
>nuts and bolts but a lot of other things are threaded also. I personally 
>think that threads range all the way from "only one example known" or "does 
>not come out to any known common dimension or pitch" to "only known to be 
>used by one manufacturer on one product" all the way to "billions and 
>billions sold".
>
>I think it would be cool to thread a rod .864"-17 1/5 tpi with a 23 degree 
>thread angle on one side and 38 degree angle on the other. (Now that I think 
>about I believe one of my first threads was something like that :>).)
>
>I have quite a few taps and dies that do not conform to the current 
>recommended standards but I am sure that they were used somewhere at some 
>time.

You presumably all know that Whitworth, which is one of the earlier thread
standards, was arrived at by Whitworth collecting together all the examples
of threads he could find and taking an average.

Prior to the adoption of widespread standards, people just cut whatever
thread they had the tool to make.

Then you get funny things like the cycle threads, which are (almost) all 26
tpi, regardless of size.

I've got a big table somewhere with all the threads in (well, most of 'em) 
-- 
Austin Shackles.  www.ddol-las.net  my opinions are just that
Travel The Galaxy!  Meet Fascinating Life Forms...
------------------------------------------------\   
   >>  http://www.schlockmercenary.com/  <<      \  ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!

On or around 29 Aug 2008 21:59:43 +0100 (BST), Alan Bain
<alanb+news@chiark.greenend.org.uk> enlightened us thusly:

>In article ,
>Austin Shackles   wrote:
>>On or around Wed, 27 Aug 2008 14:28:42 -0700 (PDT), BobKellock
>> enlightened us thusly:
>>
>>>I have a Clark CMD1225 mill/drill which is, I believe, a ZX25 clone
>>>made in
>>>Taiwan. Their current version is the CMD1225C which, I'm told, is made
>>>in China.
>>
>>similar machine here has typically-bad metric threads.  The cheapo machines
>>often have poorly-sized or poorly-made nuts and bolts.
>
>My 1920s Lorch-Schmidt lathe has a mandrel thread which has OD 0.995"
>and using one of those thread gauges (not a projector) appears to be
>about 10tpi.  It's not BSF (as for some reason I have a 1" BSF tap) and it
>looks like the included angle of the thread is 60 degrees rather than 55.
>I've never managed to find a standard thread of this form (UNC is 8tpi
>and UNF 12tpi).  The rest of the lathe is metric with right handed 1.5mm
>pitch screws on tailstock and slides.
>
>Is this likely to be a Lorch-Schmidt special?

It's probably some sort of special if it's not BSF - the only 1"x10tpi in my
list of threads is BSF.

.995" is not 25mm though, so I doubt it's metric.

Mind, you get silly threads.  I know something with M30x1.0 on it, and AFAIK
I could if I wanted to spend enough money get a tap for it.

I've also seen M10.5x1.0 on cycle hubs.
-- 
Austin Shackles.  www.ddol-las.net  my opinions are just that
Travel The Galaxy!  Meet Fascinating Life Forms...
------------------------------------------------\   
   >>  http://www.schlockmercenary.com/  <<      \  ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!

Austin Shackles wrote:

> Mind, you get silly threads.  I know something with M30x1.0 on it, and AFAIK
> I could if I wanted to spend enough money get a tap for it.


How true!  I just spent a while cutting 100's of M79.50 x 1.5 pitch on 
some brass spinnings.


Wayne....

On Sat, 30 Aug 2008 10:21:23 +0100, Wayne Weedon
 wrote:

>Austin Shackles wrote:
>
>> Mind, you get silly threads.  I know something with M30x1.0 on it, and AFAIK
>> I could if I wanted to spend enough money get a tap for it.
>
>
>How true!  I just spent a while cutting 100's of M79.50 x 1.5 pitch on 
>some brass spinnings.
>

...and I've had to make some replacement parts with 10mm x 26 tpi
threads. Mixed standard threads like that do crop up from time to
time, just to confuse us.

Tim

"Tim Leech"  wrote in message 
news:pp5ib4lensf4tj2osgmo0hfsgbsfv5p3sq@4ax.com...
> On Sat, 30 Aug 2008 10:21:23 +0100, Wayne Weedon
>  wrote:
>
>>Austin Shackles wrote:
>>
>>> Mind, you get silly threads.  I know something with M30x1.0 on it, and 
>>> AFAIK
>>> I could if I wanted to spend enough money get a tap for it.
>>
>>
>>How true!  I just spent a while cutting 100's of M79.50 x 1.5 pitch on
>>some brass spinnings.
>>
>
> ...and I've had to make some replacement parts with 10mm x 26 tpi
> threads. Mixed standard threads like that do crop up from time to
> time, just to confuse us.
>
> Tim

Whilst everyone is focussed on queer threads - anyone got a 17/64th x 26TPI 
die in exchange for beer tokens?   This used to be very common and is now 
apparently extinct.

Steve

Steve wrote:
> 
> "Tim Leech"  wrote in message 
> news:pp5ib4lensf4tj2osgmo0hfsgbsfv5p3sq@4ax.com...
>> On Sat, 30 Aug 2008 10:21:23 +0100, Wayne Weedon
>>  wrote:
>>
>>> Austin Shackles wrote:
>>>
>>>> Mind, you get silly threads.  I know something with M30x1.0 on it, 
>>>> and AFAIK
>>>> I could if I wanted to spend enough money get a tap for it.
>>>
>>>
>>> How true!  I just spent a while cutting 100's of M79.50 x 1.5 pitch on
>>> some brass spinnings.
>>>
>>
>> ...and I've had to make some replacement parts with 10mm x 26 tpi
>> threads. Mixed standard threads like that do crop up from time to
>> time, just to confuse us.
>>
>> Tim
> 
> Whilst everyone is focussed on queer threads - anyone got a 17/64th x 
> 26TPI die in exchange for beer tokens?   This used to be very common and 
> is now apparently extinct.
> 
> Steve
STeve, Have you tried Tracy Tools. They have one of the biggest range of 
oddball taps & dies.
Not shown in my 1999 catalogue or online but worth a telephone call/email.
http://www.tracytools.com/index.htm
Bob

On Sun, 31 Aug 2008 10:06:45 +0100, "Steve"
 wrote:

>> Tim
>
>Whilst everyone is focussed on queer threads - anyone got a 17/64th x 26TPI 
>die in exchange for beer tokens?   This used to be very common and is now 
>apparently extinct.
>
>Steve 

Just checked, the only odd one I have is a  7/32" x 26 tap.

It should be possible to do a 1/64" oversize thread with a coventry
diehead. The above mentioned 10mm x 26 male thread was done OK with
3/8" chasers in a diehead.

Tim

"Bob Minchin"  wrote in message 
news:vQwuk.182961$LU4.143047@newsfe24.ams2...
> Steve wrote:
>>
>> "Tim Leech"  wrote in message 
>> news:pp5ib4lensf4tj2osgmo0hfsgbsfv5p3sq@4ax.com...
>>> On Sat, 30 Aug 2008 10:21:23 +0100, Wayne Weedon
>>>  wrote:
>>>
>>>> Austin Shackles wrote:
>>>>
>>>>> Mind, you get silly threads.  I know something with M30x1.0 on it, and 
>>>>> AFAIK
>>>>> I could if I wanted to spend enough money get a tap for it.
>>>>
>>>>
>>>> How true!  I just spent a while cutting 100's of M79.50 x 1.5 pitch on
>>>> some brass spinnings.
>>>>
>>>
>>> ...and I've had to make some replacement parts with 10mm x 26 tpi
>>> threads. Mixed standard threads like that do crop up from time to
>>> time, just to confuse us.
>>>
>>> Tim
>>
>> Whilst everyone is focussed on queer threads - anyone got a 17/64th x 
>> 26TPI die in exchange for beer tokens?   This used to be very common and 
>> is now apparently extinct.
>>
>> Steve
> STeve, Have you tried Tracy Tools. They have one of the biggest range of 
> oddball taps & dies.
> Not shown in my 1999 catalogue or online but worth a telephone call/email.
> http://www.tracytools.com/index.htm
> Bob

I check in with them from time to time but no luck so far...

It's another project that will take a couple of years to get to,  so 
patience is a virtue.

Steve

"Tim Leech"  wrote in message 
news:2iblb4lf4beehgbpphlrav664c0fej6dv4@4ax.com...
> On Sun, 31 Aug 2008 10:06:45 +0100, "Steve"
>  wrote:
>
>>> Tim
>>
>>Whilst everyone is focussed on queer threads - anyone got a 17/64th x 
>>26TPI
>>die in exchange for beer tokens?   This used to be very common and is now
>>apparently extinct.
>>
>>Steve
>
> Just checked, the only odd one I have is a  7/32" x 26 tap.
>
> It should be possible to do a 1/64" oversize thread with a coventry
> diehead. The above mentioned 10mm x 26 male thread was done OK with
> 3/8" chasers in a diehead.
>
> Tim

I guess I will end up cutting them in the lathe,  when I get a roundtuit, 
which would be a good thing to have too,  if anyone has one of those :)


Steve

Steve wrote:
> 
> I guess I will end up cutting them in the lathe,  when I get a 
> roundtuit, which would be a good thing to have too,  if anyone has one 
> of those :)
> 
> 
> Steve

Yours for £11.95...

http://www.quantumenterprises.co.uk/roundtuit/gifts.htm

They seem to be metric though.

Pete

On Sun, 31 Aug 2008 22:55:03 +0100, Peter Harrison
 wrote:

>Steve wrote:
>> 
>> I guess I will end up cutting them in the lathe,  when I get a 
>> roundtuit, which would be a good thing to have too,  if anyone has one 
>> of those :)
>> 
>> 
>> Steve
>
>Yours for £11.95...
>
>http://www.quantumenterprises.co.uk/roundtuit/gifts.htm
>
>They seem to be metric though.
>
>Pete


I have a wooden one that No 1 daughter bought me as a birthday present. It
must have got wet or dry or something, because it doesn't seem to work...


Mark Rand
RTFM

On or around Sun, 31 Aug 2008 10:06:45 +0100, "Steve"
 enlightened us thusly:

>Whilst everyone is focussed on queer threads - anyone got a 17/64th x 26TPI 
>die in exchange for beer tokens?   This used to be very common and is now 
>apparently extinct.

0 BA?

-- 
Austin Shackles.  www.ddol-las.net  my opinions are just that
Travel The Galaxy!  Meet Fascinating Life Forms...
------------------------------------------------\   
   >>  http://www.schlockmercenary.com/  <<      \  ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!

Steve wrote:
> 
> "Bob Minchin"  wrote in message 
> news:vQwuk.182961$LU4.143047@newsfe24.ams2...
>> Steve wrote:
>>>
>>> "Tim Leech"  wrote in message 
>>> news:pp5ib4lensf4tj2osgmo0hfsgbsfv5p3sq@4ax.com...
>>>> On Sat, 30 Aug 2008 10:21:23 +0100, Wayne Weedon
>>>>  wrote:
>>>>
>>>>> Austin Shackles wrote:
>>>>>
>>>>>> Mind, you get silly threads.  I know something with M30x1.0 on it, 
>>>>>> and AFAIK
>>>>>> I could if I wanted to spend enough money get a tap for it.
>>>>>
>>>>>
>>>>> How true!  I just spent a while cutting 100's of M79.50 x 1.5 pitch on
>>>>> some brass spinnings.
>>>>>
>>>>
>>>> ...and I've had to make some replacement parts with 10mm x 26 tpi
>>>> threads. Mixed standard threads like that do crop up from time to
>>>> time, just to confuse us.
>>>>
>>>> Tim
>>>
>>> Whilst everyone is focussed on queer threads - anyone got a 17/64th x 
>>> 26TPI die in exchange for beer tokens?   This used to be very common 
>>> and is now apparently extinct.
>>>
>>> Steve
>> STeve, Have you tried Tracy Tools. They have one of the biggest range 
>> of oddball taps & dies.
>> Not shown in my 1999 catalogue or online but worth a telephone 
>> call/email.
>> http://www.tracytools.com/index.htm
>> Bob
> 
> I check in with them from time to time but no luck so far...
> 
> It's another project that will take a couple of years to get to,  so 
> patience is a virtue.
> 
> Steve
Steve, If you still can't find what you need in time, then I have had 
taps made to order here http://www.tapdie.com/
The quality was good and the cost was about twice the cost of list new 
taps so too bad.

Bob

On 31 Aug, 22:30, "Steve"  wrote:
> "Tim Leech"  wrote in message
>
> news:2iblb4lf4beehgbpphlrav664c0fej6dv4@4ax.com...
>
>
>
>
>
> > On Sun, 31 Aug 2008 10:06:45 퍝, "Steve"
> >  wrote:
>
> >>> Tim
>
> >>Whilst everyone is focussed on queer threads - anyone got a 17/64th x
> >>26TPI
> >>die in exchange for beer tokens?   This used to be very common and is now
> >>apparently extinct.
>
> >>Steve
>
> > Just checked, the only odd one I have is a  7/32" x 26 tap.
>
> > It should be possible to do a 1/64" oversize thread with a coventry
> > diehead. The above mentioned 10mm x 26 male thread was done OK with
> > 3/8" chasers in a diehead.
>
> > Tim
>
> I guess I will end up cutting them in the lathe,  when I get a roundtuit,
> which would be a good thing to have too,  if anyone has one of those :)
>
> Steve- Hide quoted text -
>
> - Show quoted text -

I'm still looking for a "putting-on-tool".