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 broken screw head
Author: toffeeman3 
Date:   2017-06-30 21:47

I have a broken screw head on the register key of my Vito. It is impossible to remove the screw.
How can this be done? and where canI buy a new screw?

Any Ideas?

Thanks

07469847273

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 Re: broken screw head
Author: Matt74 
Date:   2017-06-30 22:51

A good tech should be able to remove the screw. (Even if it's a pain or requires special tools.) Unless there is a convenient donor horn around it would be easiest to make a new one from drill rod.

- Matthew Simington


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 Re: broken screw head
Author: jdbassplayer 
Date:   2017-07-01 00:07

If you need a new rod send me an email. I have tons of Vito parts horns.

-Jdbassplayer

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 Re: broken screw head
Author: kdk 
Date:   2017-07-01 06:07

A repair shop will have screw extractors small enough to grab into the broken stub of a clarinet rod screw. The shop owner may also have a drawer full of spare parts he or she has collected from cadaver instruments.

Out of curiosity, how did the screw break?

Karl

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 Re: broken screw head
Author: clarnibass 
Date:   2017-07-01 08:22

Do you mean the slot is ruined so a screwdriver can't grab onto it? I use a dental micromotor to reslot the rod, it is possible to do this without damage to the post.

Screw extractors need a hole drilled into the rod and I don't like that method.
You can try drilling in reverse if the screw isn't tight or a left hand drill if you have one, though this is more likely to damage the post.
The old method was to saw a new slot but this leaves a very significant slot in the post too.

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 Re: broken screw head
Author: toffeeman3 
Date:   2017-07-02 05:26

Hi Karl,

The screw head was already damaged when i bought it but I am probably also guilty of applying too much pressure when trying to extract it and not waiting long enough for the penetrating oil to take effect

John

07469847273

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 Re: broken screw head
Author: kdk 
Date:   2017-07-02 17:53

So the screw didn't break or shear off, just the slot is mangled?

Karl

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