moglite
Part of things
Posts: 815
Club RR Member Number: 144
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Dec 16, 2017 18:28:45 GMT
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Loads of people I've met shy away from overhead welding. Having a rusty Morris Oxford and no rotisserie I had to teach myself how. I'm only a keen DIY'er, no doubt there are certified welders out there, who will say I'm using too much wire speed (I am) This thread is intended to take some of the mystery away and encourage you to have a go I'll assume you've got welding gauntlets and an auto bucket to go with your MiG. You'll need a burn-proof jacket - I use a old army cotton army jacket. Hot weld will go through your old hoodie and give you a nasty burn - I know Spend £9.20 on one of theseSurprisingly comfortable to wear, and hot weld down the collar isn't as unpleasant as hot weld in the ear !! So now you are safe, so you can find a comfortable position under the car, get plenty of light on the subject too. Ahhh but what about welder settings etc ? Cut down on old nozzle so you get minimal standout, as you've got to be close to the weld pool Because of this - I like to add a little more gas. Power and wire-speed should be pretty much what you'd use on flat ground, you can't be afraid to work quick with a bit of heat. Get your settings dialled in on your feet if you can. I use "trigger" welding when I'm on my back. A short burst into the weld pool and repeat....and repeat... and repeat until you've got the bead you need. I'll show an example in the next post.
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1967 Morris Oxford Traveller 1979 Toyota LandCruiser BJ40 1993 Daimler Double Six 2007 Volvo XC70 2.4D
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moglite
Part of things
Posts: 815
Club RR Member Number: 144
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Dec 16, 2017 18:48:17 GMT
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So this is the boot floor of my Traveller. I modded my petrol tank to have a drain bung. Then I changed the tank, and put the bung in a different place - doh, so now I'm left with this mess !! Chop it all out, and make a repair panel The panel has to be a real good fit. A gap of much more than about 1mm all round and you'll struggle - well I do. The top left caused me some issues because of the iffy tollerance Also make sure everything is clean and paint/rust free, more so than when welding on your feet. The cleaner the weld pool, the easier it will be. Tack in - I'm using magnets on the top-side to hold in place Then do the actual welding. Get real close to the weld pool, so you can see what it is doing Get plenty of light on the subject, so you can see what it is doing It takes a while, so get comfortable under the car - or as much as possible. Two hands on the welding torch helps. I find even a small job like this one is hard on the neck, so don't be afraid to setup something to rest your head on. For those saying...yeah yeah, but the wire speed is too high.....my therapist suggested time with a flap disc and an angle grinder will help with my issues Thanks for looking, and give it a go sometime - it is very satisfying.
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1967 Morris Oxford Traveller 1979 Toyota LandCruiser BJ40 1993 Daimler Double Six 2007 Volvo XC70 2.4D
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düdo
Part of things
wide as house
Posts: 770
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Dec 16, 2017 19:36:35 GMT
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Looks good to me.
I've just come back from welding in the dark world under the Sintra and now trying to thaw out. I wear an old waxed jacket - like a Barbour but a moody Aldi one and that provides good protection when the sparks are coming down.
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Dec 16, 2017 19:52:42 GMT
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I've never needed to change the power or speed setting for upside down welding, why would it make a difference?
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moglite
Part of things
Posts: 815
Club RR Member Number: 144
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Dec 16, 2017 20:53:47 GMT
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I've never needed to change the power or speed setting for upside down welding, why would it make a difference? I don't change those, just a bit more gas " Power and wire-speed should be pretty much what you'd use on flat ground, you can't be afraid to work quick with a bit of heat "
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1967 Morris Oxford Traveller 1979 Toyota LandCruiser BJ40 1993 Daimler Double Six 2007 Volvo XC70 2.4D
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Dec 16, 2017 20:55:45 GMT
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I will second the need for avoiding weld splatter in the lug 'ole. on one occasion when under something or other , my old caddy I think , I copped for a big dollop right down into my ear , the natural reaction to the heat (and fizzing and popping noises) was an automatic upward flinch to dislodge said molten lump , which resulted in me head-butting the chassis rail with some considerable force , this in turn resulted in another automatic flinch which saw me flinging my head in the opposite direction straight into the concrete floor with even more force than the first crack. after rolling around trying to dislodge the now cooling lump of iron and calling myself every kind of ladies genitalia under the sun , I vowed never to weld overhead without earplugs firmly in situ. sunscreen wouldn't be my life tip....earplugs are!!!
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'80 s1 924 turbo..hibernating '80 golf gli cabriolet...doing impression of a skip '97 pug 106 commuter...continuing cheapness making me smile!
firm believer in the k.i.s.s and f.i.s.h principles.
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Dec 20, 2017 21:45:43 GMT
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I hate welding up rusty cars and I've got the burn scars to prove it So I've recently made myself a rotisserie Problem solved
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1992 240 Volvo T8 1955 Cadillac 1994 BMW E34 M5 (now sold ) 1999 BMW E36 sport touring x2 1967 Hillman imp Californian "rally spec" 1971 VW bay window (work in progress) 1999 Mazda 323F 1987 Jaguar XJ12 All current
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moglite
Part of things
Posts: 815
Club RR Member Number: 144
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My garage is really short, so I don't have the room for a rotisserie.
I thought about one of the rollers, that attach to the hubs.
But I saved my money, which will probably end up going to my chiropractor to cure a sore neck !!
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1967 Morris Oxford Traveller 1979 Toyota LandCruiser BJ40 1993 Daimler Double Six 2007 Volvo XC70 2.4D
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My garage is really short, so I don't have the room for a rotisserie. I thought about one of the rollers, that attach to the hubs. But I saved my money, which will probably end up going to my chiropractor to cure a sore neck !! I have a height issue in my garage so when I was working on my bus I couldn't jack it up more than 6" so I made a jig and turned it onto its side outside and rolled it in
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1992 240 Volvo T8 1955 Cadillac 1994 BMW E34 M5 (now sold ) 1999 BMW E36 sport touring x2 1967 Hillman imp Californian "rally spec" 1971 VW bay window (work in progress) 1999 Mazda 323F 1987 Jaguar XJ12 All current
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Yep, weld in the ear is defo something to be avoided, 2nd only to arc eye.
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Dec 21, 2017 14:32:45 GMT
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having done/had both , ill take hot ear any day (as long as I don't smash my head at the same time!!)
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'80 s1 924 turbo..hibernating '80 golf gli cabriolet...doing impression of a skip '97 pug 106 commuter...continuing cheapness making me smile!
firm believer in the k.i.s.s and f.i.s.h principles.
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Dec 21, 2017 15:33:18 GMT
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I can beat both arc eye and ear burn. Take it from me, welding on shorts in the summer is not a good idea, especially as they tend to gape a little round the legs. When a spark goes up said leg hole and hits the old hairy beanbag, you REALLY know about it...
The other thing that many don't think about is sunburn. A friend didn't have enough access under a VW bus with his welding helmet so took the glass out and held it over his eyes. At the end of the days welding he had a perfect white rectangle on a very red face...
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1968 Cal Look Beetle - 2007cc motor - 14.45@93mph in full street trim 1970-ish Karmann Beetle cabriolet - project soon to be re-started. 1986 Scirocco - big plans, one day!
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Dec 21, 2017 16:12:33 GMT
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I forgot about flash burn, one hell of a sun tan that....
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Dec 21, 2017 17:20:11 GMT
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then there's the moment when you are vaguely aware of the combined aroma of smouldering sock and trainer with just a hint of hair and flesh thrown in. this normally precedes the "hop around like loon" dance , as you try and fling off the offending footwear , complete with little glowing glob of a passenger , from your now nicely burning foot!
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'80 s1 924 turbo..hibernating '80 golf gli cabriolet...doing impression of a skip '97 pug 106 commuter...continuing cheapness making me smile!
firm believer in the k.i.s.s and f.i.s.h principles.
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