Sax on the Web Forum banner

1 - 16 of 16 Posts

·
Banned
Joined
·
305 Posts
Discussion Starter #1
What tools do I need?
Which size for alto? I look at musicmedic.com but they dont have any reference, they only have size.

And how to remove them? I dont wanna damage the key.
 

·
Registered
Joined
·
1,036 Posts
Easy - give it to a pro and then pay the nice man.

Really.
 

·
Distinguished SOTW Member
Joined
·
4,544 Posts
...ditto...this is not a job for the faint of heart. The process depends on both the design and the state of wear. Couldn't even begin to point you without seeing it. Pearls are sold by outer diameter...you just measure the ones on your horn...

Are they broken?
 

·
Registered
Joined
·
42 Posts
I think most of them are glued (Yamaha uses super glue) in. If you're not worried about wrecking the old ones, just pry them out with a small screwdriver. Start at the edge of the pearl and use the tip of the screwdriver and work it in and around to loosen it and pry it out. Be careful though, the metal around the pearl is thin and you don't want to mess it up.

Then with your new pearls, just add a dab of super glue to the metal part on the key and place the new pearl in and press down to spread out the glue. It dries fast and there's no waiting time, you can play the horn as soon as the new one's are in place.
 

·
Distinguished SOTW Member, Forum Contributor 2015-
Joined
·
33,597 Posts
cjk_712 said:
I think most of them are glued (Yamaha uses super glue) in. If you're not worried about wrecking the old ones, just pry them out with a small screwdriver. Start at the edge of the pearl and use the tip of the screwdriver and work it in and around to loosen it and pry it out. Be careful though, the metal around the pearl is thin and you don't want to mess it up.
Have you done this on any worthwhile horns? You may easily ruin the bezels - and those are not easily restored. Yes, I know you said "be careful" but one doesn't know how careful until the damage is done.
 

·
Distinguished SOTW Member, Forum Contributor 2015-
Joined
·
33,597 Posts
jmm1713 said:
Depends on the horn --- if it is a vintage horn I would take it to a tech .
I wouldn't want the keys on my new horns buggered either!
 

·
Distinguished SOTW Member
Joined
·
1,453 Posts
The only time I've replaced keytouches is on student horns where the plastic ones melted out under heat, so I've never removed pro-styled pearls that are factory reamed in.

For replacement, measure the inside of the keytouch cup with a caliper. I have replaced the odd size by buying large and sanding down the edges by hand while watching TV with the horn present for fit ( You know, it's too tedious just to do without other entertainment). After sizing, I add a bevel to the exposed-side edge and use five minute epoxy to attach. It takes some time, but it's easy to do.
 

·
Distinguished SOTW Technician
Joined
·
1,417 Posts
I use a rotary tool and a small burr like this one.

http://www.sculpt.com/pictures/burrs/circo/burrpics/longstemburrs.jpg

I cut a "Y" shape slot out of the pearl and use a very large screw driver in the slot. Turning it pops the pearl out.

I wear a mask with goggles and do this outside.

I agree with the others that this may be a job left to a tech.

Good luck!
 

·
Distinguished SOTW Member
Joined
·
4,544 Posts
I take them out quite similarly, but for replacement, I'm a 'belt and suspenders guy. I use the end of a drift punch sot carefully expand the bezel, then put a small amount of high temp epoxy in, place the pearl, and then use the bezel shrinkers from Ferrees (I had to rework these and polish the business end to make them work) to compress the bezel back over the edges of the new pearl (which was sized to match the floor of the cavity).

In my experience, only Keilwerth 'just' glues them in...the glue is just to hold them in place while you get the bezel set...in my experience.
 

·
Registered
Joined
·
597 Posts
If you super glue a pearl in dont press it with your finger, I did once and glue came over the top of the pearl and I glued my finger to the key. Had to cut the skin away to get my finger free.
 

·
Distinguished SOTW Member
Joined
·
4,544 Posts
You can dissolve your finger free next time with acetone or MEK...not too healthy but better than knives to fingers...
 

·
Distinguished Technician & SOTW Columnist. RIP, Yo
Joined
·
17,204 Posts
90-second epoxy. Excellent.
 
1 - 16 of 16 Posts
Top