maf260
Part of things
Posts: 529
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I have a friend's welder being dropped off tomorrow as the Irwin tool didn't work - not enough of the stud protruding to get sufficient grip.
NOW - I've never welded anything in my life, so this feels a bit daunting. Any tips for the best way to weld a nut on to the stud and also the basics of how to use the welder please?!
I might also head off to find a copy of Practical Classics as well!
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Nov 10, 2012 18:44:00 GMT
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To be honest, i wouldn't recommend learning to weld by trying to weld a nut onto a sheared bolt. Could your friend not do it for you?
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Nov 10, 2012 19:15:01 GMT
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You need to get someone who is alreadt a decent welder to do it. In my experience you dpn't get many attempts so you need to get it right first time. If there's not much bolt sticking out it can be built up with a couple of blobs of weld. Then slip a nut over it and weld through the centre of the nut. Let it cool right down before you attempt to remove it. Once it's stopped glowing you can hit with a bit of penetrating oil too. If the nut shears off, just repeat the process. I recently did a batch of ship cylinder heads and removed maybe 40 sheared off 1/4 UNC bolts this way. Sometimes it took two or three attempts to get each one but all apart from three came out and some were even sheared flush with the surface.
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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Nov 10, 2012 20:37:03 GMT
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you could have a go at this without having used a welder I guess,
knock a nut onto the stud. you will be welding into the middle of the nut to join the two together.
put the power up to the top and the feed around 4
hold the torch 90 deg to the work and 3-4mm away. do not let the torch itself touch the work.
Pull the trigger and hold it for 2-3 seconds.
when you release the trigger you should see the nut is totally glowing red. now grab your ratchet and gently try to get the stud moving. if it doesnt move easily then wait for the weld to cool and then try and undo it.
if it snaps off, get another nut and do it again. the heat cycling will help to release the stud anyway.
wear gloves and expect sparks to go everywhere. welcome to welding. you'll never put it down again. dead useful
Cheers
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mrx
Part of things
Posts: 134
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Nov 13, 2012 11:03:34 GMT
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Id have used battery acid and some plastercine
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