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  #21  
Old 01-08-2013, 08:45 AM
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platypus20 platypus20 is offline
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Originally Posted by pumpertruck View Post
Used one of them for 28 years and don't miss it one bit.

Nothing like a 5/8 carbon and 700 amps to backgouge a root.

AAH! the memories and I have a few scars to prove it
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  #22  
Old 01-08-2013, 09:01 AM
Arr Tee Arr Tee is offline
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So the air comes out of the holes on the clamp jaws? Is that why you see the rod choked up so far? In many of the videos it is clamped in about the middle of the rod.
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  #23  
Old 01-08-2013, 12:59 PM
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Originally Posted by Arr Tee View Post
So the air comes out of the holes on the clamp jaws? Is that why you see the rod choked up so far? In many of the videos it is clamped in about the middle of the rod.
Yeah, depending on the air supply, if the nozzle is too far away form the puddle you don't remove enough of it. Get the nozzle too close with too much air and you've got crap scattered everywhere--which is pretty much the case most of the time but if you're careful you can control the spread to some extent...
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  #24  
Old 01-20-2013, 01:16 AM
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Originally Posted by digger doug View Post
WHAT DID YOU SAY !

Yup, it's a great tool if you wear earplugs.

The only time I don't like it, is in a corner......kinda don't like
the stuff flying back.
Yup, what Doug said.
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  #25  
Old 01-23-2013, 06:12 PM
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Originally Posted by FabberMcGee View Post
400 amps is the most I've ever used and it was all I needed. Worked with a guy once that said he was using one washing hard face that was too brittle off of 48" dirt augers. Using 600 amps and flat electrodes. Said it was fast, but they had to put their Tweco quick connectors in a bucket of water to keep from burning the rubber off them. Also said the coil of welding cable hanging on the welder would jump a couple inches every time the arc made and broke. That's pretty often when it gets to sputtering.

I believe him, he was a guy that wasn't prone to embellishment.
What's wrong with a little embellishment if it enhences the story...


I went over a jump this big.. Goes back with freind couple days later.. Oh, must have been at a different spot...
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  #26  
Old 01-24-2013, 07:10 AM
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No embellishment....

We doo this in production every day, yes the cables hanging
in loops do move.
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  #27  
Old 02-05-2013, 10:52 PM
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Originally Posted by digger doug View Post
No embellishment....

We doo this in production every day, yes the cables hanging
in loops do move.
Couldn't figure out why our welder was shutting down during the course of a job until someone watched the machine. You guessed it, the lead hanging in coils off the front of the machine kept slapping the off button.

If you ever blow or burn a hole in the hose, I know just the ticket to repair it without buying a new lead. A new length of radiator or air hose is all you're going to need to buy.
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  #28  
Old 02-05-2013, 11:03 PM
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We used motise and tennon carbons in an auto feeder on some roots. Shot all the crap down into a water pan. Some of the roots were in the 20-30 foot range depending on which weapon system you were working on.

Don't miss it one bit.

If you want to see cables jump, shoot some 3" studs at 3,000 amps.
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  #29  
Old 02-06-2013, 11:29 AM
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Quote:
Originally Posted by LKeithR View Post
Yeah, depending on the air supply, if the nozzle is too far away form the puddle you don't remove enough of it. Get the nozzle too close with too much air and you've got crap scattered everywhere--which is pretty much the case most of the time but if you're careful you can control the spread to some extent...
Having hot crap from an air gouge going all over the place can get interesting.
When I was still on the construction end of my career, I was working with the mechanics one winter. There was a floor drain that ran the length of the shop, and it usually didn't get cleaned out as often as it should, so could end up with oil soaked floor drying compound, and in this situation, a bit more than usual hydraulic oil from a leaking hose.
One of the mechanics was using the gouge at the far end of the shop and hot spatter ended up in the floor drain, which eventually caught on fire, causing a few people to move a lot faster than usual.
Those flames were easily snuffed out, and the drain got properly cleaned for the first time in months.
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  #30  
Old 02-07-2013, 05:53 AM
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If I may have 2 cents worth?

You need to watch your duty cycle with these units. I have seen them over matched to their power source and have the unit cook the transformer from near continual use.
To explain further,the power source, especially the transformer becomes so hot that the insulation between the lamination's, degrades.

When a power sources suffers abuse like that they are not to pleasant to weld with after that.The result is something akin to permanent arc blow.

A 400 amp capacity arc is well matched to a 600 amp power source.

Yes its common sense, but sometimes common sense is not so common.

Ozwelder
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