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Type: Posts; User: woolyhead

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    Actually, I am wondering how thick you reckon the...

    Actually, I am wondering how thick you reckon the steel rod is and is it mild steel, stainless or spring steel of some sort? I've got a tenor sax with a few dents in it so I may buy a rod of steel...
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    Oh yes. I agree, this is brilliant. Thanks for...

    Oh yes. I agree, this is brilliant. Thanks for pointing it out BaronJ. It's certainly worth remembering for the future.
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    Dent removal from brass

    He seems to support the dent inside the sax tube using a rod whose other end is held in a vice. My question is that if he hammers down on to the outside of the tube ie in the same direction as the...
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    Yes I understand what you say Baron J. It takes...

    Yes I understand what you say Baron J. It takes quite a lot of pressure on a dent to push it back where the brass belongs. One of my ideas was to place a nut and bolt at right angles across the...
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    Dent removal from brass

    For dents closer to the trombone's bell the idea is not to hammer on the dent but to press the brass back into place. I did this with what amounts to being an anvil and a press but the anvil took a...
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    Give up vacuum cleaners

    I've stopped using all vacuum cleaners. They suck!! :U
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    Removing dents from a brass trombone

    That's a good idea Baron. It would save having to fill the big hole worn in the water key while providing a support for the sleeve that goes through the key and touches the support posts. I know that...
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    making springs

    Hi Grahame. It is difficult to find a suitable spring for my trombone because it is about 140 years old and they are not made like this one any more. I have already shown a sketch of the spring form...
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    making springs

    I have just finished making a small spring as part of the water key on a trombone. I found that it was very difficult to get the exact shape I needed. I bent the metal so often that I thought it...
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    dent removal in brass

    The attached is my trombone after I removed some of the dents. I used 11mm steel balls for removing those dents lying in curves and an 18 inch by 3/4 inch steel rod for straightening out the big dent...
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    dent removal in brass

    Much obliged BaronJ. I'll give it a go soon. Meanwhile the key is solid and the 2mmis also solid. If the washers don't impact on the spring they would have to be smaller in diameter than the coils of...
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    dent-removal-brass

    Hi Baron. Yes I could solder these washers but why would I? The gap between the lever and the posts was meant to accomodate the spring. Unless I use a spring which mounts somewhere else. Actually I...
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    dent removal in brass

    Well that was quick. Here I am again. Hopefully my pictures are attached.
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    dent removal in brass

    Hi Guys. While I was thinking through all the ideas you have sent, I noticed that the water drain operating lever, called a water key, wobbles so much that the felt sealing pad on its end sometimes...
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    dent-removal-brass

    Hi Russ57. Disassemble a trombone? Yes to a degree. The sliders undo from the tuning crook-and-bell tubes and the sliders come apart from each other. Those are the main parts but the tuning crook...
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    dent removal in brass

    Hi BaronJ. About getting soft steel balls, yes I have seen them advertised on the net but I'm not sure what sizes yet. I'm doing an experiment with a 10 mm ball to see how that goes first.
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    ball on a string?

    How would you attach a ball to a string? I suppose you could drill a hole through it and tie a know in the other side of the string. I've answered my own question!
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    joolstacho

    Thanks for the ideas. I will take a photo when my granddaughter comes round next time. I don't have a phone with a camera so she will use her's.
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    copy motor bike tank method

    Thanks for your idea joolstacho. I had thought about your idea before as it happens (honest). But I wondered about filling the holes after doing the actual dent removal. There are about six or seven...
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    dent removal in brass

    Yes I suppose so but with a ball diameter of, say, 20mm, the increase in diameter of the trombone's bell (where the dent is located) would be about 15mm. So under a flat anvil, this side of where the...
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    dent removal in brass

    Yes, you're right BaronJ, on several scores. An electromagnet sounds good but an anvil would have to curve in two directions at the same time. Still. it could be done. But I'll try the disc drive...
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    removing dents in brass

    That's also useful to me. Obliged. But I did wonder whether the small ball in the tube might dent the original dent the opposite way over a small part of it and not actually remove it. I know that...
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    I didn't know computer disc drives had powerful...

    I didn't know computer disc drives had powerful magnets in them. That's useful information. Thanks very much BaronJ. Now I can find myself an old computer disc drive and try the vibrating ball idea...
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    dent removal in brass

    And the ones I've seen advertised are expensive. But on the net I found this idea (diagram attached). The idea is to thump the hammer head into the stop so that vibrations travel down to the magnet...
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    Dent removal from brass

    This trombone is not a very valuable item. About 50 pounds sterling. The consequences of messing the job up are not very much. I just want to make it look better for my own satisfaction really and...
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    dent removal in brass

    How could I remove small dents (the biggest is 20mm long x 3mm deep, the others are roughly circular about 6mm diameter and 2mm deep) in a brass trombone tube? Most of these dents are halfway round...
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