- Thread starter caprinut
- Start date
yep ,, I find it does ,, try panel clamps for butt joints , or good old vise grips etc for everything else ,,
Onthespotwelding
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Yes don’t weld right next to a magnet
When I’m fitting a replacement panel on a vehicle I use magnets to hold it.
few tacs so it’s in place, remove magnets and continue to weld……..very carefully!….
…. And Pray the panel doesn’t distort
When I’m fitting a replacement panel on a vehicle I use magnets to hold it.
few tacs so it’s in place, remove magnets and continue to weld……..very carefully!….
…. And Pray the panel doesn’t distort
they are so handy ,,, tidy job.
James1979
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Screwdriver
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Yes. massive current in a magnetic field, think: electric motor. Something is gonna move!
James1979
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You ever welded used drill pipe? That’s fun.
You have to wrap the return round it by the weld to counteract the magnetic field in the pipe.
mike 109444
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Had to look up what that was. Still not sure but I think I have just ordered a couple of thousand foot of it... opps
James1979
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What’s it officially called?Had to look up what that was. Still not sure but I think I have just ordered a couple of thousand foot of it... opps
I am not a drillist. I worked on the ships that contained the drillists and their drill rigs. I got to fix their **** though. Yay me.
That's one of those things that I keep intending to make but never get around to it.
Alan Reynolds
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When I was a computer etc engineer, we installed cat 5 and computers on an industrial estate into a printing company.
All went well until one lady complained her monitor was wobbling occasionally.
Went there, couldn’t see the fault but she kept complaining so we changed the monitor. These were crt monitors.
Anyway she kept complaining so I worked out the times that she was complaining and made a point to arrive and observe.
Well the monitor screen stated to wobble so I quickly plugged it into the computer next to it. It still wobbled so I knew that it was probably external influences as the wobble changed if I picked it up and moved it around.
I found out a very large cable ran under the building where her desk sat, to feed the factory next door that had a machine that drew enormous currents when it ran at the same tomes every day.
I moved the desk and never had another complaint.
I had a similar problem with another customer and when I went there, I just moved the small 12v charger that sat next to his monitor. Expensive call out just to move a charger 6 inches!
All went well until one lady complained her monitor was wobbling occasionally.
Went there, couldn’t see the fault but she kept complaining so we changed the monitor. These were crt monitors.
Anyway she kept complaining so I worked out the times that she was complaining and made a point to arrive and observe.
Well the monitor screen stated to wobble so I quickly plugged it into the computer next to it. It still wobbled so I knew that it was probably external influences as the wobble changed if I picked it up and moved it around.
I found out a very large cable ran under the building where her desk sat, to feed the factory next door that had a machine that drew enormous currents when it ran at the same tomes every day.
I moved the desk and never had another complaint.
I had a similar problem with another customer and when I went there, I just moved the small 12v charger that sat next to his monitor. Expensive call out just to move a charger 6 inches!
pedrobedro
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We used to spin down hole drill tubes at a foundry I worked many years ago
cheb
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Why is there a magnetic field in the pipe? Is it a design thing or a result of being used?
James1979
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Result of being used. It’s because it rubs in the earth.
I’ve welded it onboard as they make protection bars for service pipes and cables because the drill pipe swings about when they’re lifting it from the pipe rack or putting it back.
I’ve also welded it when it’s been scrapped as people make cattle races from it. If you go to the Oilfield services companies in places like Gt Yarmouth or Aberdeen you can buy it when it’s scrap.
I have a set of these,I thought at the time that they promoted blow through the weld puddle would blow round each side leaving the stitch, this may be a question of technique or the helmet I couldn't see through at the time, I've since purchased a trucolour helmet might have another go. but there are situations where they cannot be used e.g plug welding.
Bert
James1979
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I’ve never had that problem I must admit.
They are useful for what they are. Someone mentioned butt welds so I put it out there.
If you’re plug welding then that’s a whole other pain but if you can get to the back of the panel to remove stuff or there’s a way for it to drop out somehow then that makes it a lot easier.
Skin pins / clecos are handy. I’ve an old set of ******** ones for welding.
mike 109444
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Where you CAN use them, try having a bright light behind the weld/gap and then use a length (bout 12 inches) of copper pipe with the last 2 inches flattened. Now just before you go to tack place the flattened end of the copper pipe up to the fine gap in the panel. You will know where to tack as the light will be blocked by the copper pipe and it should also cut down on blow through.
