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Distinguished Technician & SOTW Columnist. RIP, Yo
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17,204 Posts
I can't see why you need a new hole or to tap larger. You said you can get the broken-headed screw out.
How about get Musicmedic to throw a screw in with your next order. They have been known to oblige with unlisted items that they use themselves for repair work.
 

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Distinguished Technician & SOTW Columnist. RIP, Yo
Joined
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17,204 Posts
Or finish the tapping with a "bottoming" (or "plug") tap rather than an "intermediate" or taper tap.

But as far as I can tell this is a thread about finding an appropriate screw , not re-threading the hole or making a new hole.
 

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Distinguished Technician & SOTW Columnist. RIP, Yo
Joined
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17,204 Posts
Gordon, I apologize.

I will try in the future not to post information, related to the original Q, that will be here to be useful to people for years to come.

(See: I can do passive-aggressive, too. I just don't have the time or energy for it, most days, and consciously avoid it IRL. Your resentment's 15 years old. Let's get over it. I'm not trying to be the boss of this area. I'm just trying to give back a bit more than I take, in posting here. Surely we can find a way to let resentments from 15+ years ago rest.)
I assume sarcasm. Although in a forum situation it can be ambiguous.
I totally agree that general information is good to present, but I felt that in this particular case the OP writer might be being led down a fraught path of re drilling and tapping when that seemed to be totally unnecessary. And I contributed info to that drought path too.

I have no idea why you have taken this personally, such that you need to attack personally.
Re "Your resentment's 15 years old. Let's get over it... Surely we can find a way to let resentments from 15+ years ago rest ":
FYI I have an appalling memory for certain things so I have no idea what you are talking about. The "getting over it", whatever "it" is, is entirely in your court. I take posts at face value, and although I am familiar with regular names that appear, I have little or no recollection of previous correspondence. I respond to the contents of posts, not to the person writing.
 

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Distinguished Technician & SOTW Columnist. RIP, Yo
Joined
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17,204 Posts
Thanks ptung.

... (I think you were then committed to synthetic)...
I was using agglomerated cork (partly synthetic) for keys quite a while even before Yamaha did. I sourced it from industrial gasket manufacturers.
And yes, it has now indeed become a standard.
But if you meant synthetic pads, well I have never been committed to them, except I very much like music Center's synthetic "microfibre" leather on one of their top model pads. Unfortunately the pads are too expensive, but I use this synthetic leather on certain linkages on clarinets many on oboes.

...Anyway, I much prefer cooperation to needless provocation....
Likewise :)

I credit my first tenor teacher, also the best tech in New Orleans, now, to me -- but I haven't been there working since 2010, when I left -- Martin Krusche, for my originally becoming aware of them. Having the good sense to make insightful choices for customers that are outside the norm speaks for itself. Now it's like a consensus, here, on them. How times change.

Anyway, I much prefer cooperation to needless provocation. If you're already on that page, that's fantastic. Will honor that. In the absence of needling. lol

. If you find a really good source for 0-80 taps -- ones that are hard to break -- that deserves a follow-up post.
Cheaper, carbon steel ones are less likely to break, and are suitable for copper alloys. The more expensive HSS stay sharp longer, especially when cutting carbon steels, but snap more easily.
 

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Distinguished Technician & SOTW Columnist. RIP, Yo
Joined
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17,204 Posts
Turn a taper or intermediate tap into a bottom tap by grinding the end off it.
 

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Distinguished Technician & SOTW Columnist. RIP, Yo
Joined
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17,204 Posts
I have found a set of hss taps and dies locally on ebay that starts at 0-80 and goes up (6 sizes) and contains taper and bottom taps. I plan to order it this week.
Be aware that there is a huge range of qualities, eg those that really fail to make a keen thread from the get-go, and those that have so much friction that they break before the threading can be completed.
A local specialist supplier to engineers and tool makers probably has brands that can be trusted.
 

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Distinguished Technician & SOTW Columnist. RIP, Yo
Joined
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17,204 Posts
It just sucks that good taps and dies can start at 5 times the price of the crap.
 

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Distinguished Technician & SOTW Columnist. RIP, Yo
Joined
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17,204 Posts
I guess you mean 0-80. :)
 
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