H.R.Fisher Posted February 7 Report Share Posted February 7 I have a violin with a roth casper peg that is slipping,I am not familiar with this kind of peg. How do I repair it? I would appreciate your help. Thanks in advance, Henry Quote Link to comment Share on other sites More sharing options...
Dwight Brown Posted February 7 Report Share Posted February 7 https://www.cs-violin-shop.com/repairs/peg-hole-bushing/caspari-pegs.html You may just need to tighten the screw. Don't get carried away, a little bit at a time. DLB Quote Link to comment Share on other sites More sharing options...
Brad Dorsey Posted February 7 Report Share Posted February 7 Two possibilities: 1. The usual fix is to tighten the screw, as Dwight says. Tighten it a tiny bit -- maybe 20 degrees -- and see if the peg holds the string in tune. If it doesn't, keep tightening the screw in small increments until it holds. You will find that the slot in the screw head is too narrow for a standard flat-bladed screwdriver, so you may need to file or grind the blade thinner. And once you find or make a screwdriver that fits, keep it in the case with the violin. 2. Occasionally the bushing that the peg mounts in come loose and rotates with the peg. If this happens, tightening the screw will not help -- the bushing needs to be reglued in the peg hole. Quote Link to comment Share on other sites More sharing options...
H.R.Fisher Posted February 7 Author Report Share Posted February 7 2. Occasionally the bushing that the peg mounts in come loose and rotates with the peg. If this happens, tightening the screw will not help -- the bushing needs to be reglued in the peg hole. Yes that seems to be the case. Are they pushed in, screwed in, what is the procedure of removing them? Quote Link to comment Share on other sites More sharing options...
Brad Dorsey Posted February 7 Report Share Posted February 7 The bushing is glued in the peg hole. I have only ever reglued two or three of them, and it's been a while since I last did one. As I recall, what I have done is unscrew the screw until it came all the way out, at which point the entire peg assembly can be disassembled. As the pieces come out, it is helpful to keep them in order to make it easier to reassemble them. One of the pieces will be the bushing, which you will need to glue back in the peg hole. I think I have always used a drop or two of thin super glue, which dries almost instantly. But if you're not used to using this stuff, you risk having it run all over the varnish, and you will not be able to remove it. So, instead, you could also use any type of water-soluble wood glue such as Elmer's, Tite Bond, etc. Wait a few hours for it to dry, reassemble the peg assembly around and through the bushing, put the string back on and adjust the screw tight enough to hold the string in tune. Quote Link to comment Share on other sites More sharing options...
H.R.Fisher Posted February 7 Author Report Share Posted February 7 I took the screw out and nothing comes apart, i pulled, wedged with a screw driver no luck. There's a brass collar around the peg and what appears to be cork or a leather type of material around the collar which is attached /glued to the peg hole. I tightening the screw as tight as i possibly could to no avail. It looks like the cork/leather material in the peg hole has deteriorated or is squashed so that there is not enough friction to hold the peg from slipping. If i could take the whole thing out i could see what is going on and fix it or perhaps replace it with a standard peg. But at this point i can't even take it out. I don't want to bust the peg box. Quote Link to comment Share on other sites More sharing options...
David Burgess Posted February 7 Report Share Posted February 7 15 minutes ago, H.R.Fisher said: I took the screw out and nothing comes apart, i pulled, wedged with a screw driver no luck. There's a brass collar around the peg and what appears to be cork or a leather type of material around the collar which is attached /glued to the peg hole. I tightening the screw as tight as i possibly could to no avail. It looks like the cork/leather material in the peg hole has deteriorated or is squashed so that there is not enough friction to hold the peg from slipping. If i could take the whole thing out i could see what is going on and fix it or perhaps replace it with a standard peg. But at this point i can't even take it out. I don't want to bust the peg box. Then perhaps someone else already tried to "fix" it, before you got to it, using glue in the wrong places? Quote Link to comment Share on other sites More sharing options...
Brad Dorsey Posted February 7 Report Share Posted February 7 I wish I had this in my hands. I fix these so infrequently that I never can remember how they come apart, so I have to figure it out anew every time. But I always find that the disassembly procedure becomes obvious once I start working on it. Something should come off once the screw is removed, and it seems like what comes off must be either the head of the peg or the shaft, which, I think, is pulled or pressed out of the opposite side of the peg box. As I recall, the bushing is clamped between the head of the peg and something inside the peg box on the other side of the busting, and the clamping force is adjusted by turning the screw. The bushing is supposed to be glued in the peg hole, but if the bushing is loose, you might be able to pull the whole assembly out of the head side. Or perhaps you can press it out from the other side. Another thing you could try is screwing the screw partway back in so that it is several revolutions short of being screwed in all the way. Then try pressing or gently tapping on the screw head. This might start driving the shaft out the other side. Quote Link to comment Share on other sites More sharing options...
H.R.Fisher Posted February 7 Author Report Share Posted February 7 Then perhaps someone else already tried to "fix" it, before you got to it, using glue in the wrong places? Yes, that was the case,it appears someone tried to correct it by dropping some glue in and got it in all the wrong places. I ended up taking the whole thing out and put in a regular tapered peg . It was a learning experience . In taking it apart I now know how they work. Anyway thanks for your consideration Henry Quote Link to comment Share on other sites More sharing options...
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