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The holder for the better tap and die kits have a built in guide to keep the
die straight. No problem with cutting an inch or more of thread.
Regards,
Chalie
----- Original Message -----
From: "Bob Spidell" <bspidell@comcast.net>
To: healeys@autox.team.net
Sent: Wednesday, May 13, 2020 10:17:51 AM
Subject: Re: [Healeys] BSF Taps and Dies
My (somewhat limited) experience is that the so-called 'dies' are really
only thread chasers. If you try to use them to actually thread, say, a
pipe or rod the die will wander laterally and you won't get a straight
thread. I don't know if actual 'dies' are available outside a machine
shop but, probably the only way to get a straight thread is with a lathe.
On 5/13/2020 6:49 AM, Bob Haskell wrote:
> Tom,
>
> If the pipe is 1/2" outside diameter, then a 1/2"-13 UNC or 20 UNF die
> would be used. Pipe is usually given by the inside diameter and
> normally has tapered threads (NPT), in the US. A 1/2" pipe would use
> a 1/2" NPT die which is much larger than the 1/2"-13 or 20 dies.
>
> Cheers,
>
> Bob Haskell
> Austin Healey 3000 BN7/BT7 registrar
>
> On 5/13/20 7:12 AM, Tom Felts wrote:
>> Totally off Healey content, but here is a stupid question Re. dies.
>> I have a piece of 1/2" OD steel pipe I want to thread (the outside).
>> I don't know the die size to use. A 1/2" die seems way too small.
>> Anyone know what size die to use? the number of threads doesn't
>> matter---just the size of the die.
>> Thanks
>> Tom
>>
>> ----- Original Message -----
>> From: Michael MacLean <rrengineer.mike@att.net>
>> To: 'Healeys' <healeys@autox.team.net>, simon lachlan
>> <simon.lachlan@alexarevel.plus.com>
>> Sent: Wed, 13 May 2020 02:51:28 -0400 (EDT)
>> Subject: Re: [Healeys] BSF Taps and Dies
>>
>>
>> I just want them to clean up threads. Should be adequate for that..
>> Mike M
>>
>
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<html><body><div style=3D"font-family: times new roman, new york, times, se=
rif; font-size: 12pt; color: #000000"><div>The holder for the better tap an=
d die kits have a built in guide to keep the die straight. No problem with =
cutting an inch or more of thread.</div><div><br></div><div>Regards,</div><=
div><br></div><div>Chalie</div><div><br></div><hr id=3D"zwchr"><div style=
=3D"color:#000;font-weight:normal;font-style:normal;text-decoration:none;fo=
nt-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style=3D"col=
or: #000; font-weight: normal; font-style: normal; text-decoration: none; f=
ont-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Bob=
Spidell" <bspidell@comcast.net><br><b>To: </b>healeys@autox.team.net=
<br><b>Sent: </b>Wednesday, May 13, 2020 10:17:51 AM<br><b>Subject: </b>Re:=
[Healeys] BSF Taps and Dies<br><div><br></div>My (somewhat limited) experi=
ence is that the so-called 'dies' are really <br>only thread chasers. If yo=
u try to use them to actually thread, say, a <br>pipe or rod the die will w=
ander laterally and you won't get a straight <br>thread. I don't know if ac=
tual 'dies' are available outside a machine <br>shop but, probably the only=
way to get a straight thread is with a lathe.<br><div><br></div>On 5/13/20=
20 6:49 AM, Bob Haskell wrote:<br>> Tom,<br>><br>> If the pipe is =
1/2" outside diameter, then a 1/2"-13 UNC or 20 UNF die <br>> would be u=
sed. Pipe is usually given by the inside diameter and <br>> normal=
ly has tapered threads (NPT), in the US. A 1/2" pipe would use <br>&g=
t; a 1/2" NPT die which is much larger than the 1/2"-13 or 20 dies.<br>>=
<br>> Cheers,<br>><br>> Bob Haskell<br>> Austin Healey 3000 BN7=
/BT7 registrar<br>><br>> On 5/13/20 7:12 AM, Tom Felts wrote:<br>>=
> Totally off Healey content, but here is a stupid question Re. dies.&nb=
sp; <br>>> I have a piece of 1/2" OD steel pipe I want to thread (the=
outside). <br>>> I don't know the die size to use. A 1/2=
" die seems way too small. <br>>> Anyone know what size die to =
use? the number of threads doesn't <br>>> matter---just the siz=
e of the die.<br>>> Thanks<br>>> Tom<br>>><br>>> --=
--- Original Message -----<br>>> From: Michael MacLean <rrengineer=
.mike@att.net><br>>> To: 'Healeys' <healeys@autox.team.net>,=
simon lachlan <br>>> <simon.lachlan@alexarevel.plus.com><br>&g=
t;> Sent: Wed, 13 May 2020 02:51:28 -0400 (EDT)<br>>> Subject: Re:=
[Healeys] BSF Taps and Dies<br>>><br>>><br>>> I just wan=
t them to clean up threads. Should be adequate for that..<br>>>=
Mike M<br>>><br>><br><div><br></div>_____________________________=
__________________<br>Support Team.Net http://www.team.net/donate.html<br>S=
uggested annual donation $12.75<br><div><br></div>Archive: http://www=
.team.net/pipermail/healeys http://autox.team.net/archive<br><div><br></div=
>Healeys@autox.team.net<br>http://autox.team.net/mailman/listinfo/healeys<b=
r><div><br></div>Unsubscribe/Manage: http://autox.team.net/mailman/options/=
healeys/schottc@knology.net<br><div><br></div></div><div><br></div></div></=
body></html>
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_______________________________________________
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