I got a nasty little job. The joker that had the backhoe before me tried to
repair the loose pin by just reaching down inside and welding on the pin. He
did a real ****ty job and just made it damn near impossible to repair right.
(BTW, I unbolted the top pin on the same side today, it fell in two pieces,
the pin had stress fractured all the way through. I don't know why the hoe
hadn't already fell off the tractor)

Anyway, I need to cut a 1.5 inch pin in two reaching down inside the hoe
assembly along a crack about 3/4" inch wide. There's not room for the torch.
So, I was talking to "the kid" about how to do this and he reminded me I had
bought an air arc rod holder and air arc rod at an auction years ago.

Anyway, I found a rod holder that also plugs into an airline and blows an
air jet down along side the rod. I also found a few rods labeled "Accate
Jetrod" . its brass color tube about 1/2" diameter O.D. by 3/8" diameter
I.D. with a black filler material. And half a box of solid brass color rod
labeled "Arcair Copperclad". Both rods are very light - I suspect made of
carbon.

There. that's all I know about air arc cutting. can anybody fill me in on
how to use this to cut my pin? I have an Idealarc 300/300 AC/DC/TIG welder.

karl

"Karl Townsend" wrote in message
anews.com...
snip
I don't know why the hoe hadn't already fell off the tractor.


I thought you said she could operate it well?



(sorry, I HAD to say it before somebody else did.)

"Karl Townsend" wrote in message
anews.com...
I got a nasty little job. The joker that had the backhoe before me tried to
repair the loose pin by just reaching down inside and welding on the pin.
He did a real ****ty job and just made it damn near impossible to repair
right. (BTW, I unbolted the top pin on the same side today, it fell in two
pieces, the pin had stress fractured all the way through. I don't know why
the hoe hadn't already fell off the tractor)

Anyway, I need to cut a 1.5 inch pin in two reaching down inside the hoe
assembly along a crack about 3/4" inch wide. There's not room for the
torch. So, I was talking to "the kid" about how to do this and he reminded
me I had bought an air arc rod holder and air arc rod at an auction years
ago.

Anyway, I found a rod holder that also plugs into an airline and blows an
air jet down along side the rod. I also found a few rods labeled "Accate
Jetrod" . its brass color tube about 1/2" diameter O.D. by 3/8" diameter
I.D. with a black filler material. And half a box of solid brass color rod
labeled "Arcair Copperclad". Both rods are very light - I suspect made of
carbon.

There. that's all I know about air arc cutting. can anybody fill me in on
how to use this to cut my pin? I have an Idealarc 300/300 AC/DC/TIG
welder.

karl


I used to use an AirArc quite a bit but I don't remember ever reaching
inside a crack to cut something. The whole rod is conductive and it seems it
would be difficult to keep it from arcing on the sides of the gap you are
working through. They are great for gouging welds though.
Steve

Up North wrote:

"Karl Townsend" wrote in message
anews.com...
I got a nasty little job. The joker that had the backhoe before me tried to
repair the loose pin by just reaching down inside and welding on the pin.
He did a real ****ty job and just made it damn near impossible to repair
right. (BTW, I unbolted the top pin on the same side today, it fell in two
pieces, the pin had stress fractured all the way through. I don't know why
the hoe hadn't already fell off the tractor)

Anyway, I need to cut a 1.5 inch pin in two reaching down inside the hoe
assembly along a crack about 3/4" inch wide. There's not room for the
torch. So, I was talking to "the kid" about how to do this and he reminded
me I had bought an air arc rod holder and air arc rod at an auction years
ago.

Anyway, I found a rod holder that also plugs into an airline and blows an
air jet down along side the rod. I also found a few rods labeled "Accate
Jetrod" . its brass color tube about 1/2" diameter O.D. by 3/8" diameter
I.D. with a black filler material. And half a box of solid brass color rod
labeled "Arcair Copperclad". Both rods are very light - I suspect made of
carbon.

There. that's all I know about air arc cutting. can anybody fill me in on
how to use this to cut my pin? I have an Idealarc 300/300 AC/DC/TIG
welder.

karl


I used to use an AirArc quite a bit but I don't remember ever reaching
inside a crack to cut something. The whole rod is conductive and it seems it
would be difficult to keep it from arcing on the sides of the gap you are
working through. They are great for gouging welds though.
Steve

The cutting rods they use underwater are insulated with tape the whole
length, and I believe they work fine above water with the only caveat
being that you can't put them out so the whole rod will burn. They feed
O2 down the center, not air.

I used to use an AirArc quite a bit but I don't remember ever reaching
inside a crack to cut something. The whole rod is conductive and it seems
it would be difficult to keep it from arcing on the sides of the gap you
are working through. They are great for gouging welds though.
Steve

Good point, i'll have to lay a sheet of something non conductive on one
side. From google it looks like I go DC straight, hi amps as I can, and
undercut gouge to blow molten material away. Any other tips?

Karl

Karl Townsend wrote:
I used to use an AirArc quite a bit but I don't remember ever reaching
inside a crack to cut something. The whole rod is conductive and it seems
it would be difficult to keep it from arcing on the sides of the gap you
are working through. They are great for gouging welds though.
Steve

Good point, i'll have to lay a sheet of something non conductive on one
side. From google it looks like I go DC straight, hi amps as I can, and
undercut gouge to blow molten material away. Any other tips?

Karl







Have a good fire extinguisher handy and watch out for your hydraulic lines.

John

Karl Townsend wrote:

I used to use an AirArc quite a bit but I don't remember ever reaching
inside a crack to cut something. The whole rod is conductive and it seems
it would be difficult to keep it from arcing on the sides of the gap you
are working through. They are great for gouging welds though.
Steve

Good point, i'll have to lay a sheet of something non conductive on one
side. From google it looks like I go DC straight, hi amps as I can, and
undercut gouge to blow molten material away. Any other tips?

Karl



Wrap the rod in electrical tape to insulate it from arcing to the sides.

On Wed, 2 Jun 2010 20:14:05 -0500, "Karl Townsend"
wrote:

I got a nasty little job. The joker that had the backhoe before me tried to
repair the loose pin by just reaching down inside and welding on the pin. He
did a real ****ty job and just made it damn near impossible to repair right.
(BTW, I unbolted the top pin on the same side today, it fell in two pieces,
the pin had stress fractured all the way through. I don't know why the hoe
hadn't already fell off the tractor)

Anyway, I need to cut a 1.5 inch pin in two reaching down inside the hoe
assembly along a crack about 3/4" inch wide. There's not room for the torch.
So, I was talking to "the kid" about how to do this and he reminded me I had
bought an air arc rod holder and air arc rod at an auction years ago.

Anyway, I found a rod holder that also plugs into an airline and blows an
air jet down along side the rod. I also found a few rods labeled "Accate
Jetrod" . its brass color tube about 1/2" diameter O.D. by 3/8" diameter
I.D. with a black filler material. And half a box of solid brass color rod
labeled "Arcair Copperclad". Both rods are very light - I suspect made of
carbon.

There. that's all I know about air arc cutting. can anybody fill me in on
how to use this to cut my pin? I have an Idealarc 300/300 AC/DC/TIG welder.

karl

http://www.weldguru.com/CAC.html

http://www.tpub.com/content/construc.../14250_163.htm


--


"First Law of Leftist Debate
The more you present a leftist with factual evidence
that is counter to his preconceived world view and the
more difficult it becomes for him to refute it without
losing face the chance of him calling you a racist, bigot,
homophobe approaches infinity.

This is despite the thread you are in having not mentioned
race or sexual preference in any way that is relevant to
the subject." Grey Ghost

On Jun 3, 11:14*am, "Karl Townsend"
wrote:
I got a nasty little job. The joker that had the backhoe before me tried to
repair the loose pin by just reaching down inside and welding on the pin. He
did a real ****ty job and just made it damn near impossible to repair right.
(BTW, I unbolted the top pin on the same side today, it fell in two pieces,
the pin had stress fractured all the way through. I don't know why the hoe
hadn't already fell off the tractor)

Anyway, I need to cut a 1.5 inch pin in two reaching down inside the hoe
assembly along a crack about 3/4" inch wide. There's not room for the torch.
So, I was talking to "the kid" about how to do this and he reminded me I had
bought an air arc rod holder and air arc rod at an auction years ago.

Anyway, I found a rod holder that also plugs into an airline and blows an
air jet down along side the rod. I also found a few rods labeled "Accate
Jetrod" . its brass color tube about 1/2" diameter O.D. by 3/8" diameter
I.D. with a black filler material. And half a box of solid brass color rod
labeled "Arcair Copperclad". *Both rods are very light - I suspect made of
carbon.

There. that's all I know about air arc cutting. can anybody fill me in on
how to use this to cut my pin? I have an Idealarc 300/300 AC/DC/TIG welder.

On Thu, 3 Jun 2010 05:57:09 -0500, "Karl Townsend"
wrote:

...
http://www.weldguru.com/CAC.html

http://www.tpub.com/content/construc.../14250_163.htm

Gunner,

thanks for the great tutorial.

karl


Ive got an Arcair K3000 torch and some 'trodes. Ive only used it
twice..but nothing else would do the job.

Sorta fun and sorta scary the first couple times G

Gunner

--


"First Law of Leftist Debate
The more you present a leftist with factual evidence
that is counter to his preconceived world view and the
more difficult it becomes for him to refute it without
losing face the chance of him calling you a racist, bigot,
homophobe approaches infinity.

This is despite the thread you are in having not mentioned
race or sexual preference in any way that is relevant to
the subject." Grey Ghost

Ive got an Arcair K3000 torch and some 'trodes. Ive only used it
twice..but nothing else would do the job.

Sorta fun and sorta scary the first couple times G


It sure did the job for me. Melts and blows metal out WAY faster than the
torch. I'm pretty messy with it, not a clean cut like the torch. Experience
may solve that. But I've owned the unit over ten years and forgot about it.
May never need it again.

On another note, I hit my honey with a sledgehammer today. She was holding a
1-1/2 inch pin so I could hit it with the BIG sledgehammer. it got cocky and
a blow slid off hitting the vice grip she was holding. Amazing - the lady is
still talking to me. But it may be a while till I get help with a metal
project again.

Karl

On Thu, 3 Jun 2010 01:29:23 -0700 (PDT), Andrew VK3BFA
wrote:



Mate, is this thing a tool , designed to earn its keep, or a project?



All machine tools, from bandsaws to backhoes come into the category of "toys"


:-)


Mark Rand
RTFM

On Jun 6, 8:11*am, Mark Rand wrote:
On Thu, 3 Jun 2010 01:29:23 -0700 (PDT), Andrew VK3BFA
wrote:



Mate, is this thing a tool , designed to earn its keep, or a project?

All machine tools, from bandsaws to backhoes come into the category of "toys"

:-)

Mark Rand
RTFM

I readily concede your point re toys Mark (we wouldnt do this
otherwise) - but its important to distinguish that which puts bread on
the table and something thats interesting to tinker with.
Andrew VK3BFA.

Tawm sez:
"I don't know why the hoe hadn't already fell off the tractor.


I thought you said she could operate it well?"

Tawm,

You bagged me with that one !

Bob (busted a gut) Swinney