I "assume" we're talking about this for the purpose of "burning" shanks to straighten things up. On a grand? For that, I don't see the reason for it. On a vertical, maybe. Although, I've used a heat gun (which is what I normally use for this) on verticals as well as grands. Otherwise, if the shank is actually bent, then I can see using the "bender". Avery At 01:13 PM 09/08/03 -0700, you wrote: >At 03:02 PM 9/8/2003 -0400, you wrote: >>Never have used these. Butr it seems they would burn the shank. Do you >>put water on the shank. >> >>What is the technique for using these pliers or the ones you heat up with >>a torch >> >>Or how do the rest of you bend warped hammer shanks (w/o the bending pliers) >> >>Thanks >> >>Dick Day >>Marshall MI > >You can use either the electric bending pliers or an alcohol lamp (passed >rapidly along the shank, don't let it sit still) with success if you are >careful. If you bend by hand with the alcohol lamp, you need to hold the >part in place until it cools a little. The electric benders work better if >you keep a sample shank handy to test the heat, and if you have a rheostat >which can adjust how much current they are getting. If the wood turns >brown and starts to smoke, the pliers are too hot (natch.) If the sample >shank doesn't want to bend, they are not hot enough. > >Both systems work better on newer shanks, which are more limber and less >brittle and dried out. > >I have had good success with the pliers on brittle old shanks by using >alcohol first. Dampen a small foam (throw-away) brush with a few drops of >vodka -- it takes very little, and more would run down and ruin the butt >leather -- then swab the shank quickly with it. It soaks right in. The >alcohol evaporates very quickly so that the bending pliers don't set it >alight. Then when you put on the pliers (tested first for the right amount >of heat) you get a gentle hiss as the water from the vodka turns to steam. >At this point the shank will bend without breaking -- well, I've never had >one break. If you take it too far, dampen again with vodka (the alcohol >helps the water soak in deep) and bend them back. > >It's probably a good idea to practice on some scrap parts first. > >Susan > > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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