Hello,
I am getting serious about being a home mechanic. I already have a few
metric round-adjustable Greenfield dies that I have used to "extend"
the treading into the blank sections on some longer bolts (M6, M8, M10
and M12). A friend of mine stated stated that you should not use the
round "threading" dies for retreading work since they simply shave
away the deformed metal rather than coaxing the threads back into
shape like hexagonal dies would. Is this correct?
So should I also purchase some of the Hex shaped "rethreading" dies if
I already own the circular versions?

On Aug 21, 2:41*am, SrivSanjay wrote:
Hello,
I am getting serious about being a home mechanic. I already have a few
metric round-adjustable Greenfield dies that I have used to "extend"
the treading into the blank sections on some longer bolts (M6, M8, M10
and M12). A friend of mine stated stated that you should not use the
round "threading" dies for retreading work since they simply shave
away the deformed metal rather than coaxing the threads back into
shape like hexagonal dies would. Is this correct?
So should I also purchase some of the Hex shaped "rethreading" dies if
I already own the circular versions?

Are the bolts critical? If they are really critical and serious
things would happen if they fail, then consider new bolts. But if
they are holding the wheels on a wheelbarrow and the worst that could
happen is that you have to buy a new bolt...............


Dan

mattathayde had written this in response to
http://rittercnc.com/metalworking/Re...re-195613-.htm
:


-------------------------------------
wrote:

On Aug 21, 2:41=A0am, SrivSanjay wrote:
Hello,
I am getting serious about being a home mechanic. I already have a
few
metric round-adjustable Greenfield dies that I have used to
"extend"
the treading into the blank sections on some longer bolts (M6, M8,
M10
and M12). A friend of mine stated stated that you should not use
the
round "threading" dies for retreading work since they
simply shave
away the deformed metal rather than coaxing the threads back into
shape like hexagonal dies would. Is this correct?
So should I also purchase some of the Hex shaped
"rethreading" dies if
I already own the circular versions?

Are the bolts critical? If they are really critical and serious
things would happen if they fail, then consider new bolts. But if
they are holding the wheels on a wheelbarrow and the worst that could
happen is that you have to buy a new bolt...............

=20
Dan

just to add, if the damage isnt to intense you probably will be fine, now
if
the thread are mashed down ya you might have an issue

just need to use judgment if it will matter much... if its going to be a
PITA to
fix something that gets ripped out or stripped out then just a new bolt,
for the
most part fasteners are cheap, even the expensive ones are usually cheaper
than
the work to fix a broken off/stripped out one

-matt



##-----------------------------------------------##
Delivered via http://www.rittercnc.com/
Metalworking Forums
Web and RSS access to your favorite newsgroup -
rec.crafts.metalworking - 169927 messages and counting!
##-----------------------------------------------##

"mattathayde" wrote in message
oups.com...
mattathayde had written this in response to
http://rittercnc.com/metalworking/Re...re-195613-.htm
:


-------------------------------------
wrote:

On Aug 21, 2:41=A0am, SrivSanjay wrote:
Hello,
I am getting serious about being a home mechanic. I already have a
few
metric round-adjustable Greenfield dies that I have used to
"extend"
the treading into the blank sections on some longer bolts (M6, M8,
M10
and M12). A friend of mine stated stated that you should not use
the
round "threading" dies for retreading work since they
simply shave
away the deformed metal rather than coaxing the threads back into
shape like hexagonal dies would. Is this correct?
So should I also purchase some of the Hex shaped
"rethreading" dies if
I already own the circular versions?

Are the bolts critical? If they are really critical and serious
things would happen if they fail, then consider new bolts. But if
they are holding the wheels on a wheelbarrow and the worst that could
happen is that you have to buy a new bolt...............

=20
Dan

just to add, if the damage isnt to intense you probably will be fine, now
if
the thread are mashed down ya you might have an issue

just need to use judgment if it will matter much... if its going to be a
PITA to
fix something that gets ripped out or stripped out then just a new bolt,
for the
most part fasteners are cheap, even the expensive ones are usually cheaper
than
the work to fix a broken off/stripped out one

-matt


Note that Sanjay is probably in India where the cost of labor is very
different than here - it may make sense to repair something we would
discard. The key on repairing a damaged bolt is to push the threads back
into place, so yes, if you can get the thread restoring dies as well as the
cutting dies it would be helpful. But compare the cost of the die to the
cost of bolts and see if it makes sense. Where it is important is when the
damaged threads are part of something that itself is expensive - a wheel
spindle, or a stamped, forged, or cast part - then restoring the threads
makes a lot of sense

On Aug 20, 10:30*pm, (mattathayde)
wrote:
mattathayde had written this in response tohttp://rittercnc.com/metalworking/Re-Can-I-use-a-round-adjustable-die...
*:

-------------------------------------



wrote:
On Aug 21, 2:41=A0am, SrivSanjay wrote:
Hello,
I am getting serious about being a home mechanic. I already have a
few
metric round-adjustable Greenfield dies that I have used to
"extend"
the treading into the blank sections on some longer bolts (M6, M8,
M10
and M12). A friend of mine stated stated that you should not use
the
round "threading" dies for retreading work since they
simply shave
away the deformed metal rather than coaxing the threads back into
shape like hexagonal dies would. Is this correct?
So should I also purchase some of the Hex shaped
"rethreading" dies if
I already own the circular versions?
Are the bolts critical? *If they are really critical and serious
things would happen if they fail, then consider new bolts. *But if
they are holding the wheels on a wheelbarrow and the worst that could
happen is that you have to buy a new bolt...............
=20
Dan

just to add, if the damage isnt to intense you probably will be fine, *now
if
the thread are mashed down ya you might have an issue

just need to use judgment if it will matter much... if its going to be a
PITA to
fix something that gets ripped out or stripped out then just a new bolt,
for the
most part fasteners are cheap, even the expensive ones are usually cheaper
than
the work to fix a broken off/stripped out one

-matt

##-----------------------------------------------##
Delivered via *http://www.rittercnc.com/
Metalworking Forums
Web and RSS access to your favorite newsgroup -
rec.crafts.metalworking - 169927 messages and counting!
##-----------------------------------------------##

Well you are correct that one shouldn't bother with simple bolt
fasteners since they are cheap. However, some parts which have
integral threading can be expensive. For instance, variousus ball
joints on the steering and suspension components or the drive axles.
The treads of these components are usually rusted and grimed up from
road debris by the time you have to open them. The threading on the
steering link can get a bit bruised from an arm puller.

On Aug 20, 11:31*pm, "Bill Noble" wrote:
"mattathayde" wrote in message

oups.com...



mattathayde had written this in response to
http://rittercnc.com/metalworking/Re...adjustable-die...
:

-------------------------------------
wrote:

On Aug 21, 2:41=A0am, SrivSanjay wrote:
Hello,
I am getting serious about being a home mechanic. I already have a
few
metric round-adjustable Greenfield dies that I have used to
"extend"
the treading into the blank sections on some longer bolts (M6, M8,
M10
and M12). A friend of mine stated stated that you should not use
the
round "threading" dies for retreading work since they
simply shave
away the deformed metal rather than coaxing the threads back into
shape like hexagonal dies would. Is this correct?
So should I also purchase some of the Hex shaped
"rethreading" dies if
I already own the circular versions?

Are the bolts critical? *If they are really critical and serious
things would happen if they fail, then consider new bolts. *But if
they are holding the wheels on a wheelbarrow and the worst that could
happen is that you have to buy a new bolt...............

=20
Dan

just to add, if the damage isnt to intense you probably will be fine, *now
if
the thread are mashed down ya you might have an issue

just need to use judgment if it will matter much... if its going to be a
PITA to
fix something that gets ripped out or stripped out then just a new bolt,
for the
most part fasteners are cheap, even the expensive ones are usually cheaper
than
the work to fix a broken off/stripped out one

-matt

Note that Sanjay is probably in India where the cost of labor is very
different than here - it may make sense to repair something we would
discard. *The key on repairing a damaged bolt is to push the threads back
into place, so yes, if you can get the thread restoring dies as well as the
cutting dies it would be helpful. *But compare the cost of the die to the
cost of bolts and see if it makes sense. *Where it is important is when the
damaged threads are part of something that itself is expensive - a wheel
spindle, or a stamped, forged, or cast part - then restoring the threads
makes a lot of sense

Well, actually, my parents are from India. I myself am in the US so I
have no problem getting fasteners, but as you said, some threaded
parts can be expensive like ball joints or the front drive shafts. The
threading on those always have rust and road grime. I was just
wondering if thread restoring dies offer any advantage over regular
round adjustable dies or is it that tap manufacturers simple want you
to buy a second set. From what I've heard so far it seems like a
worthwhile investment.

"SrivSanjay" wrote in message
...
On Aug 20, 11:31 pm, "Bill Noble" wrote:
"mattathayde" wrote in message

oups.com...



mattathayde had written this in response to
http://rittercnc.com/metalworking/Re...adjustable-die...
:

-------------------------------------
wrote:

On Aug 21, 2:41=A0am, SrivSanjay wrote:
Hello,
I am getting serious about being a home mechanic. I already have a
few
metric round-adjustable Greenfield dies that I have used to
"extend"
the treading into the blank sections on some longer bolts (M6, M8,
M10
and M12). A friend of mine stated stated that you should not use
the
round "threading" dies for retreading work since they
simply shave
away the deformed metal rather than coaxing the threads back into
shape like hexagonal dies would. Is this correct?
So should I also purchase some of the Hex shaped
"rethreading" dies if
I already own the circular versions?

Are the bolts critical? If they are really critical and serious
things would happen if they fail, then consider new bolts. But if
they are holding the wheels on a wheelbarrow and the worst that could
happen is that you have to buy a new bolt...............

=20
Dan

just to add, if the damage isnt to intense you probably will be fine, now
if
the thread are mashed down ya you might have an issue

just need to use judgment if it will matter much... if its going to be a
PITA to
fix something that gets ripped out or stripped out then just a new bolt,
for the
most part fasteners are cheap, even the expensive ones are usually cheaper
than
the work to fix a broken off/stripped out one

-matt

Note that Sanjay is probably in India where the cost of labor is very
different than here - it may make sense to repair something we would
discard. The key on repairing a damaged bolt is to push the threads back
into place, so yes, if you can get the thread restoring dies as well as the
cutting dies it would be helpful. But compare the cost of the die to the
cost of bolts and see if it makes sense. Where it is important is when the
damaged threads are part of something that itself is expensive - a wheel
spindle, or a stamped, forged, or cast part - then restoring the threads
makes a lot of sense

Well, actually, my parents are from India. I myself am in the US so I
have no problem getting fasteners, but as you said, some threaded
parts can be expensive like ball joints or the front drive shafts. The
threading on those always have rust and road grime. I was just
wondering if thread restoring dies offer any advantage over regular
round adjustable dies or is it that tap manufacturers simple want you
to buy a second set. From what I've heard so far it seems like a
worthwhile investment.

All hex-shaped dies are not thread-restoring dies. For example Craftsman has a line of threading
dies that are hex-shaped.

Bob Swinney

On Fri, 21 Aug 2009 14:56:32 -0500, "Robert Swinney"
wrote:


"SrivSanjay" wrote in message
...
On Aug 20, 11:31 pm, "Bill Noble" wrote:
"mattathayde" wrote in message

oups.com...



mattathayde had written this in response to
http://rittercnc.com/metalworking/Re...adjustable-die...
:

-------------------------------------
wrote:

On Aug 21, 2:41=A0am, SrivSanjay wrote:
Hello,
I am getting serious about being a home mechanic. I already have a
few
metric round-adjustable Greenfield dies that I have used to
"extend"
the treading into the blank sections on some longer bolts (M6, M8,
M10
and M12). A friend of mine stated stated that you should not use
the
round "threading" dies for retreading work since they
simply shave
away the deformed metal rather than coaxing the threads back into
shape like hexagonal dies would. Is this correct?
So should I also purchase some of the Hex shaped
"rethreading" dies if
I already own the circular versions?

Are the bolts critical? If they are really critical and serious
things would happen if they fail, then consider new bolts. But if
they are holding the wheels on a wheelbarrow and the worst that could
happen is that you have to buy a new bolt...............

=20
Dan

just to add, if the damage isnt to intense you probably will be fine, now
if
the thread are mashed down ya you might have an issue

just need to use judgment if it will matter much... if its going to be a
PITA to
fix something that gets ripped out or stripped out then just a new bolt,
for the
most part fasteners are cheap, even the expensive ones are usually cheaper
than
the work to fix a broken off/stripped out one

-matt

Note that Sanjay is probably in India where the cost of labor is very
different than here - it may make sense to repair something we would
discard. The key on repairing a damaged bolt is to push the threads back
into place, so yes, if you can get the thread restoring dies as well as the
cutting dies it would be helpful. But compare the cost of the die to the
cost of bolts and see if it makes sense. Where it is important is when the
damaged threads are part of something that itself is expensive - a wheel
spindle, or a stamped, forged, or cast part - then restoring the threads
makes a lot of sense

Well, actually, my parents are from India. I myself am in the US so I
have no problem getting fasteners, but as you said, some threaded
parts can be expensive like ball joints or the front drive shafts. The
threading on those always have rust and road grime. I was just
wondering if thread restoring dies offer any advantage over regular
round adjustable dies or is it that tap manufacturers simple want you
to buy a second set. From what I've heard so far it seems like a
worthwhile investment.

All hex-shaped dies are not thread-restoring dies. For example Craftsman has a line of threading
dies that are hex-shaped.

Bob Swinney

I scored a rather large set of hex shaped dies from the large factory I
just tore down. All primary threading dies.

Gunner

Whenever a Liberal utters the term "Common Sense approach"....grab your
wallet, your ass, and your guns because the sombitch is about to do
something damned nasty to all three of them.