Hi, Peter,
If you find a source for even a tap and die for this thread, please send
along a link. I'll do the same.
While it's usually for older Chickerings (and the occasional S&S), I'm
finding myself running into these more often these days. Like myself,
an antedeluvian design....
Good luck; and good hunting!
Kind regards.
Horace
On 3/23/2023 3:23 PM, Peter Grey via Piano Technicians Guild wrote:
> Horace,
>
>
>
>
>
> Yes...so I attempted to "figure" it out and it does in fact appear to be 10-28 (7 threads in 1/4" equals 28 tpi).?? Probably available on the web somewhere.
>
>
>
>
>
> I'm actually hoping to use an extant hammer rail yo make a nice let off rack (inspired by the thread on the same topic).
>
>
>
>
>
> Thanks!
>
>
>
>
>
> Peter Grey Piano Doctor
>
>
> ------------------------------
> Peter Grey
> Stratham NH
> (603) 686-2395
>
pianodoctor57@gmail.com> ------------------------------
> -------------------------------------------
> Original Message:
> Sent: 03-23-2023 18:09
> From: Horace Greeley
> Subject: Chickering brass flange threads
>
> Hi, Peter,
>
> There was a period of time during which Steinway used some 10/28
> screws/nuts for some applications. Most of those supplies are
> long-since sold out; and I'm not sure if a 10/28 machine screw is going
> to be available without finding a fairly competent machinist.
>
> That said, I'm with James in suggesting acquiring a thread gauge or two.
> Depending on what you find at a Rockler or Woodcraft store, you might
> also try checking out used Starrett tools on eBay.
>
> I hope that this is of some help.
>
> Kind regards.
>
> Horace
>
> On 3/23/2023 2:03 PM, Peter Grey via Piano Technicians Guild wrote:
>> Yes
>>
>>
>>
>>
>>
>> Peter Grey Piano Doctor
>>
>>
>> ------------------------------
>> Peter Grey
>> Stratham NH
>> (603) 686-2395
>>
pianodoctor57@gmail.com <
pianodoctor57@gmail.com>
>> ------------------------------
>>
>> Original Message:
>> Sent: 03-23-2023 15:10
>> From: James Kelly
>> Subject: Chickering brass flange threads
>>
>>
>> I do not know the answer but you may try the sizing gauges you can find at True Value hardware stores in the section that sells nuts and bolts. Some of the woodworking stores like Rockler and Woodcraft sell various gauges to measure nuts, bolts, screws. Are you referring to the hammer rail on a Chickering Grand that has brass hammer flanges ?
>>
>>
>> ------------------------------
>> James Kelly
>> Owner- Fur Elise Piano Service
>> Pawleys Island SC
>> (843) 325-4357
>>
>>
>> Original Message:
>> Sent: 03-23-2023 10:34
>> From: Peter Grey
>> Subject: Chickering brass flange threads
>>
>>
>> Does anyone know the actual TPI of the old brass flange hamner rail screws? The whip rail is standard 8-32, but the hammer rail "appears" to me to be between 10-32 and 10-28. A standard 10-32 machine screw will thread in part way but stop prematurely (binding).
>>
>>
>>
>> Visual TPI match ups don't look quite perfect, hence I'm asking if anyone KNOWS.
>>
>>
>>
>> Peter Grey Piano Doctor
>>
>>
>> ------------------------------
>> Peter Grey
>> Stratham NH
>> (603) 686-2395
>>
pianodoctor57@gmail.com <
pianodoctor57@gmail.com> <
pianodoctor57@gmail.com></
pianodoctor57@gmail.com><
pianodoctor57@gmail.com>>
>> ------------------------------
>>
>>
>> Reply to Sender :
https://my.ptg.org/eGroups/PostReply/?GroupId=43&MID=763385&SenderKey=9e630203-91a1-491d-8c04-f5c286672e79 <https: my.ptg.org/egroups/postreply/?groupid="43&MID=763385&SenderKey=9e630203-91a1-491d-8c04-f5c286672e79">
>>
>> Reply to Discussion :
https://my.ptg.org/eGroups/PostReply/?GroupId=43&MID=763385 <https: my.ptg.org/egroups/postreply/?groupid="43&MID=763385">
>>
>>
>>
>> You are subscribed to "Pianotech" as
horacegreeleypiano@sonic.net <
horacegreeleypiano@sonic.net>. To change your subscriptions, go to
http://my.ptg.org/preferences?section=Subscriptions. <http: my.ptg.org/preferences?section="Subscriptions."> To unsubscribe from this community discussion, go to
http://my.ptg.org/HigherLogic/eGroups/Unsubscribe.aspx?UserKey=18d8c323-aa1d-4526-8bf1-a6805870cbe6&sKey=KeyRemoved&GroupKey=2bb4ebe8-4dba-4640-ae67-111903beaddf. <http: my.ptg.org/higherlogic/egroups/unsubscribe.aspx?userkey="18d8c323-aa1d-4526-8bf1-a6805870cbe6&sKey=KeyRemoved&GroupKey=2bb4ebe8-4dba-4640-ae67-111903beaddf.">
>>
>
>
> Original Message:
> Sent: 3/23/2023 5:03:00 PM
> From: Peter Grey
> Subject: RE: Chickering brass flange threads
>
>
> Yes.
>
>
>
>
>
> Those places only have standard threads and metric. I doubt this is a metric thread back then in Boston.
>
>
>
>
>
> There are other types of threading standards but i dont know what they all are. Hence my hope that someone dar more knowledgeable on this might know.
>
>
>
>
>
> Peter Grey Piano Doctor
>
>
>
>
>
> ------------------------------
> Peter Grey
> Stratham NH
> (603) 686-2395
>
pianodoctor57@gmail.com <
pianodoctor57@gmail.com>
> ------------------------------
>
>
> Reply to Sender :
https://my.ptg.org/eGroups/PostReply/?GroupId=43&MID=763388&SenderKey=9e630203-91a1-491d-8c04-f5c286672e79>
> Reply to Discussion :
https://my.ptg.org/eGroups/PostReply/?GroupId=43&MID=763388>
>
>
> You are subscribed to "Pianotech" as
horacegreeleypiano@sonic.net. To change your subscriptions, go to
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Original Message:
Sent: 3/23/2023 6:23:00 PM
From: Peter Grey
Subject: RE: Chickering brass flange threads
Horace,
Yes...so I attempted to "figure" it out and it does in fact appear to be 10-28 (7 threads in 1/4" equals 28 tpi). Probably available on the web somewhere.
I'm actually hoping to use an extant hammer rail yo make a nice let off rack (inspired by the thread on the same topic).
Thanks!
Peter Grey Piano Doctor
------------------------------
Peter Grey
Stratham NH
(603) 686-2395
pianodoctor57@gmail.com
------------------------------
Original Message:
Sent: 03-23-2023 18:09
From: Horace Greeley
Subject: Chickering brass flange threads
Hi, Peter,
There was a period of time during which Steinway used some 10/28
screws/nuts for some applications. Most of those supplies are
long-since sold out; and I'm not sure if a 10/28 machine screw is going
to be available without finding a fairly competent machinist.
That said, I'm with James in suggesting acquiring a thread gauge or two.
Depending on what you find at a Rockler or Woodcraft store, you might
also try checking out used Starrett tools on eBay.
I hope that this is of some help.
Kind regards.
Horace
On 3/23/2023 2:03 PM, Peter Grey via Piano Technicians Guild wrote:
> Yes
>
>
>
>
>
> Peter Grey Piano Doctor
>
>
> ------------------------------
> Peter Grey
> Stratham NH
> (603) 686-2395
> pianodoctor57@gmail.com
> ------------------------------
>
> Original Message:
> Sent: 03-23-2023 15:10
> From: James Kelly
> Subject: Chickering brass flange threads
>
>
> I do not know the answer but you may try the sizing gauges you can find at True Value hardware stores in the section that sells nuts and bolts. Some of the woodworking stores like Rockler and Woodcraft sell various gauges to measure nuts, bolts, screws. Are you referring to the hammer rail on a Chickering Grand that has brass hammer flanges ?
>
>
> ------------------------------
> James Kelly
> Owner- Fur Elise Piano Service
> Pawleys Island SC
> (843) 325-4357
>
>
> Original Message:
> Sent: 03-23-2023 10:34
> From: Peter Grey
> Subject: Chickering brass flange threads
>
>
> Does anyone know the actual TPI of the old brass flange hamner rail screws? The whip rail is standard 8-32, but the hammer rail "appears" to me to be between 10-32 and 10-28. A standard 10-32 machine screw will thread in part way but stop prematurely (binding).
>
>
>
> Visual TPI match ups don't look quite perfect, hence I'm asking if anyone KNOWS.
>
>
>
> Peter Grey Piano Doctor
>
>
> ------------------------------
> Peter Grey
> Stratham NH
> (603) 686-2395
> pianodoctor57@gmail.com <pianodoctor57@gmail.com>
> ------------------------------
>
>
> Reply to Sender : https://my.ptg.org/eGroups/PostReply/?GroupId=43&MID=763385&SenderKey=9e630203-91a1-491d-8c04-f5c286672e79
>
> Reply to Discussion : https://my.ptg.org/eGroups/PostReply/?GroupId=43&MID=763385
>
>
>
> You are subscribed to "Pianotech" as horacegreeleypiano@sonic.net. To change your subscriptions, go to http://my.ptg.org/preferences?section=Subscriptions. To unsubscribe from this community discussion, go to http://my.ptg.org/HigherLogic/eGroups/Unsubscribe.aspx?UserKey=18d8c323-aa1d-4526-8bf1-a6805870cbe6&sKey=KeyRemoved&GroupKey=2bb4ebe8-4dba-4640-ae67-111903beaddf.
>
Original Message:
Sent: 3/23/2023 5:03:00 PM
From: Peter Grey
Subject: RE: Chickering brass flange threads
Yes.
Those places only have standard threads and metric. I doubt this is a metric thread back then in Boston.
There are other types of threading standards but i dont know what they all are. Hence my hope that someone dar more knowledgeable on this might know.
Peter Grey Piano Doctor
------------------------------
Peter Grey
Stratham NH
(603) 686-2395
pianodoctor57@gmail.com
------------------------------
</pianodoctor57@gmail.com></http:></http:></horacegreeleypiano@sonic.net></https:></https:></pianodoctor57@gmail.com></pianodoctor57@gmail.com></pianodoctor57@gmail.com>