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When did Bach mouthpieces become consistent?



 
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JetJaguar
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PostPosted: Wed Apr 17, 2024 10:12 am    Post subject: When did Bach mouthpieces become consistent? Reply with quote

We all know in the old days, mouthpieces weren't consistent because they used a cutting tool that wore out until replaced. So the degrees of wear resulted in inconsistent products.

Then they got smart and hired Robbie the Robot who constantly adjusted a very fine tool to produce a perfectly uniform product, piece after piece.

When did that begin? Small period after the CORP?

Thanks
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bebiperez
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PostPosted: Wed Apr 17, 2024 12:10 pm    Post subject: Reply with quote

Last month I purchased a brand new Bach 1.5C from WWBW. It wobbled on all my trumpets. I bought a second one and the same problem. I ended returning both. FWIW I have two Bach Symphonic mouthpieces that fit perfectly on all the receivers.

Last edited by bebiperez on Wed Apr 17, 2024 4:54 pm; edited 1 time in total
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homebilly
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PostPosted: Wed Apr 17, 2024 12:28 pm    Post subject: Reply with quote

those were made by Wobbly the Wobot
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zaferis
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PostPosted: Wed Apr 17, 2024 2:22 pm    Post subject: Reply with quote

When they, like everyone else, got their CNC machines up and running. I'm pretty sure that there have been some changes to the design of what is being made - i.e. changed to a more generally liked 3C design.

I've had more issues with plating - I recently picked up a "duplicate" of my main piece and found the throat noticeable different in size - a little extra silver in the throat had closed it of a tick.
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JetJaguar
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PostPosted: Wed Apr 17, 2024 8:48 pm    Post subject: Reply with quote

zaferis wrote:
When they, like everyone else, got their CNC machines up and running.


Is that really supposed to be an answer?
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Halflip
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PostPosted: Wed Apr 17, 2024 8:54 pm    Post subject: Reply with quote

homebilly wrote:
those were made by Wobbly the Wobot

Oh, that wascally wobot!

I'd have to guess that the CNC period started on or after the "Large Letter" period (1997-2003).

This thread seems to confirm it (see the first post by Martin):

https://www.trumpetherald.com/forum/viewtopic.php?p=342636
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Seymor B Fudd
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PostPosted: Thu Apr 18, 2024 3:18 am    Post subject: Reply with quote

Wobot ! You wascal you!

However - the other day I was forced to bowwow, I mean borrow a VB 1 1/4 C from my section buddy. He had two, one of them as old as my own old one (at home), from 1970 - the other one 2-3 years old. They were absolutely totally different The later one stuffy lacking that big crisp sound which was possible with the old one.

So it´s a good question. Might be as Zaferis is suggesting, adaptation to newer demands/trends thus not so much malfunctioning wobots.
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gord-o
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PostPosted: Thu Apr 18, 2024 3:36 am    Post subject: Reply with quote

Halflip's response is spot on. I went on a factory tour of the Bach factory in 1997 and they were making a lot 7C pieces that day on two long CNC machines. The operator would load a long bar of brass in the machine, push the go button, and the machine would make the piece. There was a cart with racks of finished mouthpieces ready to go to plating. I should have asked if they were making models other than the 7C, but I remember that they were reluctant to answer some of the questions I had asked earlier. They did say those machines were new, and they were proud of them, so I think that late 1990's 'large letter' answer is correct.
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abontrumpet
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PostPosted: Thu Apr 18, 2024 5:10 am    Post subject: Re: When did Bach mouthpieces become consistent? Reply with quote

As of 2022, consistency hadn't been achieved.
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zaferis
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PostPosted: Thu Apr 18, 2024 5:29 am    Post subject: Reply with quote

JetJaguar wrote:
zaferis wrote:
When they, like everyone else, got their CNC machines up and running.


Is that really supposed to be an answer?



Yes, I don't know the date - I'm sure could be looked up somewhere.. but before CNC controlled lathing, as the tools wore the product changed. If you bought a mouthpiece at the beginning of the tools life vs. one at the end of it's life the mouthpieces would be different - slightly but evident.
Now machines, computer controlled cut/grind/lathe to a very specific measurement.
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zaferis
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PostPosted: Thu Apr 18, 2024 5:34 am    Post subject: Re: When did Bach mouthpieces become consistent? Reply with quote

abontrumpet wrote:
As of 2022, consistency hadn't been achieved.


I'll disagree... the issue is not in manufacturing but in stock. It's hard to know if you're buying a mouthpiece that was made this year vs. one that has been in the store since 2005, 1995.. etc
And like any production run there are updates "improvement" made periodically - If you buy a mouthpiece today from one store and you expect it to be exactly what you bought 10 years ago in a different place is expecting a lot, and not an issue of manufacturing QC. (and there are counterfeits in the market)
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mograph
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PostPosted: Thu Apr 18, 2024 5:41 am    Post subject: Reply with quote

zaferis wrote:
Now machines, computer controlled cut/grind/lathe to a very specific measurement.


Apparently, compensating the tool offset for tool wear, temperature, and deflection due to pressure is a thing, but it seems to require attention from the operator. I would have thought by now that offset compensation would be automatic, where the CNC machine sets up a feedback loop from finished work piece to carriage. (shrug) But I'm not a machinist.

https://www.practicalmachinist.com/forum/threads/is-compensating-for-tool-wear-a-thing.416475/
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mograph
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PostPosted: Thu Apr 18, 2024 5:49 am    Post subject: Reply with quote

zaferis wrote:
Yes, I don't know the date - I'm sure could be looked up somewhere..


Dad, the tool-and-die man, was trained on this Moog (Bill Moog, cousin of Robert Moog) in 1975. It ran on punched paper tape. I can't say when Bach adopted the technology, but this was early CNC in the field, FWIW.

https://www.practicalmachinist.com/moog2.jpg
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abontrumpet
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PostPosted: Thu Apr 18, 2024 6:39 am    Post subject: Re: When did Bach mouthpieces become consistent? Reply with quote

zaferis wrote:
I'll disagree... the issue is not in manufacturing but in stock.


We can agree to disagree. I'm not saying that two mouthpieces of the same stock were completely different, but they were different. CNC is only one part of the equation here. But yes, MUCH more consistent once CNC was introduced, but still inconsistent. Not sure what the new standards are, but this was my experience up till 2022.
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chef8489
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PostPosted: Thu Apr 18, 2024 8:36 pm    Post subject: Re: When did Bach mouthpieces become consistent? Reply with quote

abontrumpet wrote:
zaferis wrote:
I'll disagree... the issue is not in manufacturing but in stock.


We can agree to disagree. I'm not saying that two mouthpieces of the same stock were completely different, but they were different. CNC is only one part of the equation here. But yes, MUCH more consistent once CNC was introduced, but still inconsistent. Not sure what the new standards are, but this was my experience up till 2022.

You are more inconsistent from day to day than a Bach mouthpiece and people that say they can tell a difference without proper measuring equiptment are full of it. 99% of the time it's placebo because that's what they are expecting.
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abontrumpet
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PostPosted: Fri Apr 19, 2024 5:32 am    Post subject: Re: When did Bach mouthpieces become consistent? Reply with quote

chef8489 wrote:
people that say they can tell a difference without proper measuring equiptment are full of it. 99% of the time it's placebo because that's what they are expecting.


Big, if true
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Andy Del
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PostPosted: Sat Apr 20, 2024 8:43 pm    Post subject: Reply with quote

Asking when Bach became consistent is like asking you when did you stop beating your wife.
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CaptPat
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PostPosted: Sun Apr 21, 2024 4:16 am    Post subject: Reply with quote

I don’t think that recent Bach offerings are more or less consistent than mass produced MP’s from other manufacturers, like Yamaha.
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jazz50's
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PostPosted: Sun Apr 21, 2024 7:59 am    Post subject: Reply with quote

A couple of years ago I purchased a Symphonic 1C 24/24 that I really liked.
So I decided to get a second one. Eventually I ended up with 4 different mouthpieces, all Symphonic 1C’s 24/24. Bach and consistency are not friends. But maybe the fact that all their pieces are different, is the reason so many people find one that works for them. Just ONE though.
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