Guido Posted August 13, 2022 Report Share Posted August 13, 2022 This Mirecourt bow has a rather strange adjuster on it, which may be a replacement, not sure. Anyone seen anything like it? The metal has behaved/ oxidised rather differently from the nickel mounts on the frog. From a distance it looks more like aluminium, but it has the proper weight (4.3g). The even stranger thing is the thread on the screw - have a close look! Quote Link to comment Share on other sites More sharing options...
Brad Dorsey Posted August 13, 2022 Report Share Posted August 13, 2022 I have occasionally seen aluminum-mounted buttons (and frogs), but I can’t tell from you pictures if that’s what you have. What is strange about the screw thread? Quote Link to comment Share on other sites More sharing options...
martin swan Posted August 13, 2022 Report Share Posted August 13, 2022 2 hours ago, Brad Dorsey said: What is strange about the screw thread? It's a flat thread rather than triangular Quote Link to comment Share on other sites More sharing options...
Guido Posted August 13, 2022 Author Report Share Posted August 13, 2022 13 minutes ago, martin swan said: It's a flat thread rather than triangular Yes, flat, or rather square. Wide spaced, too, and at quite an angle (giving lots of movement per turn). Have you seen it before? Quote Link to comment Share on other sites More sharing options...
martin swan Posted August 13, 2022 Report Share Posted August 13, 2022 Yes but I can't remember where or when ... Quote Link to comment Share on other sites More sharing options...
Wood Butcher Posted August 13, 2022 Report Share Posted August 13, 2022 An Acme thread, which is different to a rolled thread. Quote Link to comment Share on other sites More sharing options...
Guido Posted August 14, 2022 Author Report Share Posted August 14, 2022 15 hours ago, martin swan said: Yes but I can't remember where or when ... Maybe here? Quote Link to comment Share on other sites More sharing options...
Guido Posted August 14, 2022 Author Report Share Posted August 14, 2022 14 hours ago, Wood Butcher said: An Acme thread, which is different to a rolled thread. Thanks for the name of it... and all the info that google turns up for it. Quote Link to comment Share on other sites More sharing options...
Guido Posted August 14, 2022 Author Report Share Posted August 14, 2022 And a little more oddity with this adjuster: it doesn't seem constructed in the typical way with an ebony core and two rings. Or maybe it is except the lower ring is more like a cap with integrated nipple recess. Quote Link to comment Share on other sites More sharing options...
Blank face Posted August 14, 2022 Report Share Posted August 14, 2022 7 hours ago, Guido said: And a little more oddity with this adjuster: it doesn't seem constructed in the typical way with an ebony core and two rings. Or maybe it is except the lower ring is more like a cap with integrated nipple recess. Chinese adjusters are often made this way, also some Bubenreuth (though they might have used imported). Quote Link to comment Share on other sites More sharing options...
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