Flute key pins
Moderators: Classitar, pied_piper, Phineas
Flute key pins
I had to remove a couple key pins in order to access and straighten a bent key rod. The key pins I removed had been peened on the tapered end. They proved to be quit difficult to remove. Is this a necessary process that needs to be repeated when replacing the old pins with new pins? Would the use of Loctite 222 or some other means avoid the need to peen the pins allowing for easier removal in the future? Is it even necessary in the first place?
Re: Flute key pins
They should not be peened over, I never peen the new ones I fit, yes you can peen them if you wish but totally unnecessary.
Are you sure you took them out in the right direction, peening may be evidence from inserting them in with a light tap.
Are you sure you took them out in the right direction, peening may be evidence from inserting them in with a light tap.
-
fluteguy18
- Posts: 2311
- Joined: Sun Jul 16, 2006 3:11 pm
Re: Flute key pins
I wouldn't peen them either. Aside from a snug fit, gravity should help hold them in place unless for some reason they're inserted from the bottom. Even then, if they're fitting properly you shouldn't have any issues.
For future reference if you ever encounter pins that are bent this way you can always clip off the peen and file off any burs with fine jewelers files. They'll come right out then. That is of course after you have made sure that it is the smaller tapered end that is bent over and not just evidence of a heavy handed tap on the larger end to ensure the pins had been seated properly.
For future reference if you ever encounter pins that are bent this way you can always clip off the peen and file off any burs with fine jewelers files. They'll come right out then. That is of course after you have made sure that it is the smaller tapered end that is bent over and not just evidence of a heavy handed tap on the larger end to ensure the pins had been seated properly.
Re: Flute key pins
Thank you for your replies mirwa and fluteguy18.
I never considered the possibility of someone inserting a pin from the "bottom." The two pins I was able to remove came out O.K. after some careful filing on one and cutting off the bent over end of the other. I have not been able to remove the third pin after grinding down the peened end and trying to drive it out from the bottom. It must have been inserted with a sledge hammer. I'll check to see if it may have been inserted from the bottom.
I don't plan on peening the new pins.
I never considered the possibility of someone inserting a pin from the "bottom." The two pins I was able to remove came out O.K. after some careful filing on one and cutting off the bent over end of the other. I have not been able to remove the third pin after grinding down the peened end and trying to drive it out from the bottom. It must have been inserted with a sledge hammer. I'll check to see if it may have been inserted from the bottom.
I don't plan on peening the new pins.
-
fluteguy18
- Posts: 2311
- Joined: Sun Jul 16, 2006 3:11 pm
Re: Flute key pins
It's not common for pins to be inserted from the bottom, but every once in a while you will manage to come across a flute that has that feature. Usually however if they are inserted from one side, all of them are inserted from that same side. It's also very possible that there might be some corrosion holding the pin in place, in which case I would recommend applying a drop or two of corrosion cracking/penetrating oil to help break that up. Let it sit for a few hours and try again.