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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Aluminium glue
If I do decide to have a go at welding with my MIG - what would be a good
starting point current wise, etc? The tube is approx 70mm diameter with a 2mm thick wall The bush 24mm x 12mm with a 14mm thread already tapped in it. -- *Why don't you ever see the headline "Psychic Wins Lottery"? Dave Plowman London SW To e-mail, change noise into sound. |
#2
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Aluminium glue
"Dave Plowman (News)" wrote in message ... If I do decide to have a go at welding with my MIG - what would be a good starting point current wise, etc? The tube is approx 70mm diameter with a 2mm thick wall The bush 24mm x 12mm with a 14mm thread already tapped in it. You don't have an ideal situation if you're trying to glue a flat boss to a round tube, especially with such a thin wall thickness because you can't even flat the tube enough to match the boss without breaking right through it. You could shape the boss to match the tube o/d if you had a lathe or mill to generate a 70mm diameter curve. Easier to weld it then I'm now thinking. If I was doing it I'd flat the tube a bit with a milling cutter, drill a hole, turn the boss to be a fit into that with a flange and weld round it. Alternatively I'd set up a flycutter at 70mm diameter, radius the bottom of the boss to match the tube and then weld that on. I'll do it for you if you get stuck. I've got loads of spare ally offcuts too if you need to make another one. -- Dave Baker |
#3
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Aluminium glue
"Dave Baker" wrote in message ... "Dave Plowman (News)" wrote in message ... If I do decide to have a go at welding with my MIG - what would be a good starting point current wise, etc? The tube is approx 70mm diameter with a 2mm thick wall The bush 24mm x 12mm with a 14mm thread already tapped in it. You don't have an ideal situation if you're trying to glue a flat boss to a round tube, especially with such a thin wall thickness because you can't even flat the tube enough to match the boss without breaking right through it. You could shape the boss to match the tube o/d if you had a lathe or mill to generate a 70mm diameter curve. Easier to weld it then I'm now thinking. If I was doing it I'd flat the tube a bit with a milling cutter, drill a hole, turn the boss to be a fit into that with a flange and weld round it. Alternatively I'd set up a flycutter at 70mm diameter, radius the bottom of the boss to match the tube and then weld that on. I'll do it for you if you get stuck. I've got loads of spare ally offcuts too if you need to make another one. Alternatively, glue the boss to the inside and then tightening the sensor will just make the joint compress more. |
#4
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Aluminium glue
In article ,
Dave Baker wrote: "Dave Plowman (News)" wrote in message ... If I do decide to have a go at welding with my MIG - what would be a good starting point current wise, etc? The tube is approx 70mm diameter with a 2mm thick wall The bush 24mm x 12mm with a 14mm thread already tapped in it. You don't have an ideal situation if you're trying to glue a flat boss to a round tube, especially with such a thin wall thickness because you can't even flat the tube enough to match the boss without breaking right through it. You could shape the boss to match the tube o/d if you had a lathe or mill to generate a 70mm diameter curve. Easier to weld it then I'm now thinking. I've cut a hole in the tube so the boss pokes through. If I was doing it I'd flat the tube a bit with a milling cutter, drill a hole, turn the boss to be a fit into that with a flange and weld round it. Alternatively I'd set up a flycutter at 70mm diameter, radius the bottom of the boss to match the tube and then weld that on. Rather beyond the facilities of my home workshop.;-) I'll do it for you if you get stuck. I've got loads of spare ally offcuts too if you need to make another one. Looking at my Haynes welding manual, they make a big song and dance about MIG ally welding. Talk about needing a special wire liner. Preheating the work to 350 degrees. I've glued it in place with ordinary superglue - and it seems pretty solid. Tightened the sensor as much as I would normally do and it held. -- *I don't have a license to kill, but I do have a learner's permit. Dave Plowman London SW To e-mail, change noise into sound. |
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