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voicing question Baldwin F

  • 1.  voicing question Baldwin F

    Registered Piano Technician
    Posted 07-10-2021 01:20
    60's Baldwin F concert grand. Renner Blue Point hammers installed and voiced 3 years ago. Plays softly and loud but not much in between. Recommendations for how to improve the dynamics?
    Thanks in advance.

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    Steven Rosenthal
    Honolulu HI
    808-521-7129
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  • 2.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-10-2021 01:40
    Hi Steve

    Deep needling the shoulders will reduce the impact sound.

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    Willem "Wim" Blees, RPT
    Mililani, HI 96789
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  • 3.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-10-2021 18:53
    Acquaint yourself with Renner's instructions on how to voice Blues and Blue Points, it is a different protocol from radial voicing.  Prepare yourself for multiple voicing trips to the piano with time between visits.  

    I got a set of Blue Points a few months ago, and bench needled them.  Delivered the piano to a small old Congregational Church will hard surfaces.  The impact sound was like a double barreled shotgun blast to the face.  The felt was insanely hard, and I have lost count of how many sets of three needles I have put into the shoulders.  The impact crash is almost gone now, and I will get there.  Renner Rocks comes to mind.

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    William Truitt
    Bridgewater NH
    603-744-2277
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  • 4.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-10-2021 22:18
    Hi Steven,

    There is a thread titled "possible mismatched hammers and belly" about 1 month ago. 

    I think the following link should take you there. 

    https://my.ptg.org/communities/community-home/digestviewer/viewthread?GroupId=43&MessageKey=1a5ef368-92a5-4074-8076-820f3fbf24a8&CommunityKey=6265a40b-9fd2-4152-a628-bd7c7d770cbf&tab=digestviewer&ReturnUrl=%2fcommunities%2fcommunity-home%2fdigestviewer%3ftab%3ddigestviewer

    In it David Love and Nick Gravagne both gave excellent explanations on how to handle the Renner Blue Point Hammers. 

    I had a Baldwin L someone else put Blue Points on but didn't do much voicing. They sounded pretty bad. After the first visit (8hours) they sounded worlds better. I took David and Nicks directions and it blew me away how good Blue points can sound on a Baldwin. There were some triage like regulation issues to take care of in the first couple hours of the appointment. 

    You mentioned there is soft and loud with the piano you are working on but nothing in between.  After I voiced there was a wonderful gradient of dynamic and tone.

    Hope their input helps! 
    Daniel

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    Daniel Achten
    Chattanooga TN
    423-760-2458
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  • 5.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-11-2021 06:13
    The Blues were my go-to hammer for a very long time, but I got tired of the infinity loop of bark and pinch after deep needling - you come back the next morning and the hammers are screaming and the sustain has pinched shut again.  Repeat process until the hammers finally open up and stay that way.  I could get a lovely tone, but only after an insane amount of time invested.  All this using Renner's needling protocols.   

    Renner USA website says that the Blue Points require less needling, but I have spent as much time on these hammers as I did on the worst set of Blues I installed. 

    I clicked the link and read all posts, and especially Nick's excellent and comprehensive process.  I have followed the protocols. 

    The piano was fully rebuilt with a new red spruce board that is still opening up and getting better.  It does not lack for sustain and volume coming from the board.  I am able to separate board issues from hammer issues. 

    Nick shared the following: 
     

    Comment: "if at present, you cannot insert a three-needle tool to at least an 8 mm depth (10 is better) with some force but relative ease in the upper shoulders, then I am raising an eyebrow."

    My comment:  The felt is extremely hard and the hardest at the crown and upper shoulders 10 to 12 and 12 to 3.  The felt is so hard that I can most of the time use 3 needles, but with great effort all the time.  The felt is still hard down to about 9 and 3.  No machine gun needling here - only carefully targeted insertions with deep needling.  I have made 4 voicing visits in the past month spaced about a week apart, and have spent hours carefully needling on each visit.  The shoulders do open up and flatten and my needle marks disappear - on the next visit I am not seeing or feeling my prior needling.  With my deep needling I am finding hard felt from the crown to the core.  Having worked hard at voicing for 40 years, I have a developed sense of feeling what is going on with a set of hammers, it is an ongoing dialog.  I am still finding hard felt with my needles.  I filed the hammers for shape yesterday.  

    I am working with 2 fine musicians and the piano is being played a lot.  All good for the settling in process, and I am listening to their very perceptive comments and we agree on what is good and what is not there yet.  The piano is improved after each visit, and they are aware that getting these hammers to their best place is going to take more time to get there.  They don't miss much and it is an enjoyable collaboration.  They hear enough to believe the piano is going to be really good.  

    My sense is that these hammers have had too much heat.  I have not done any needling on the crown yet and have made all my gains doing shoulder work.  Working on the crown carries some risk of going too far, and you can't come all the way back if you make a mistake.



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    William Truitt
    Bridgewater NH
    603-744-2277
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  • 6.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-11-2021 23:38




  • 7.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-12-2021 00:41
    Thanks to everyone for their input. The hammers and shanks were installed with the idea that as it is a Renner action the hammers would be a good match and one course of the prescribed voicing (with the prevoicing) worked pretty well at the time. The piano hasn't been worked on in the intervening 3 years and I'll take the excellent advice given above. There's currently no apparent difference with or without the una chorda pedal. I expect that will improve with the voicing as well.
    Thanks again.

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    Steven Rosenthal
    Honolulu HI
    808-521-7129
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  • 8.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-12-2021 01:43

    The final phase of needling these hammers is needling very near the crown but aiming the needles away from the molding. . So if you're on the 12-1 side of the hammer insert near the crown but aim towards 4:00 and if you're on the 11-12 side aim at 8:00 with the insertion as close to the strike point as necessary-but be cautious. Things change very fast here. . That will open up the top of the hammer. You can also cross over if necessary if you're still not getting the effect you want  

    The issue with these hammers (or Abel for that matter) isn't heat. Hammers can be pressed very hard without any heat. Even Ronsen hammers are pressed with a slight amount of heat. It's just not as firm a pressing. 

    Renner let some sets of blue points slip through not long ago that was under pressed by accident according to their usual protocols. Some of you may have purchased some of those softer sets. Some complained and some liked them. Some thought they were still too hard. What it told me was that how hard these hammers are pressed is easily controllable and I wouldn't mind seeing a few different pressings being made available. 



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    David Love RPT
    www.davidlovepianos.com
    davidlovepianos@comcast.net
    415 407 8320
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  • 9.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-12-2021 07:16
    Has anyone tried using hammer softener (judiciously) in lieu of some of this needling?

    Just asking.

    Pwg

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    Peter Grey
    Stratham NH
    603-686-2395
    pianodoctor57@gmail.com
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  • 10.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-12-2021 09:16
    The Renner USA folks don't recommend using softeners. On the other hand, Chris Chernibof (incorrect spelling I'm sure) and Todd Scott made several videos on their use of softeners, and I think the hammers in the video were Renners. Posted on PianoWorld, perhaps here too.

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    Patrick Draine
    Billerica MA
    978-663-9690
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  • 11.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-13-2021 01:06
    I don't recommend it either.  It's too hard to control, it doesn't address the parts of the hammer that need to be addressed without addressing the parts of the hammer that don't need to be addressed, it takes too long to see what the effect will be and it's not easily reversible if you overdo it.  I've heard (and seen) many hammers ruined by overuse of fabric softeners.

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    David Love RPT
    www.davidlovepianos.com
    davidlovepianos@comcast.net
    415 407 8320
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  • 12.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-12-2021 18:24
    Yes, I'm familiar with Todd and Chris's technique (and use it myself). I was thinking in terms of Pianotek hammer softener which is a different product. 

    Just thinking

    Pwg

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    Peter Grey
    Stratham NH
    603-686-2395
    pianodoctor57@gmail.com
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  • 13.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-12-2021 21:04
    Thanks David for your additional comments.  My intent has been to do something similar to what you suggest; likely I will work with one needle as I do so.  

    Perhaps it is not heat (or a greater degree of heat) that makes these hammers so hard.  I asked Chip how much heat they used, but he said he did not know.  What I do know is that these hammers are harder than they advertise them to be.  I don't believe I will get as much color from them as I can get with the Ronsen Weikert felt hammers.

    The felt was unusually inconsistent in its density, and that was reflected in surprising differences in hammer weights, especially in the bass, which was all over the place.  I weighed the hammers before I did any boring, coving, curving, tailing, etc.  Note 14 weighed 9.4 grams, note 16 10.6 grams.  That may suggest that the felting process was not as controlled as would be desirable.  




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    William Truitt
    Bridgewater NH
    603-744-2277
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  • 14.  RE: voicing question Baldwin F

    Posted 07-12-2021 22:08
    <Note 14 weighed 9.4 grams, note 16 10.6 grams. 

    disagree here. The difference you are seeing is caused by different densities of the different pieces of wood used in the molding glueup. Every 3 or 4 inches is a new piece of wood, and the wood densities, piece to piece can be frustratingly variable. Ray's molding do the same thing often.

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    Jim Ialeggio
    grandpianosolutions.com
    Shirley, MA
    978 425-9026
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  • 15.  RE: voicing question Baldwin F

    Posted 07-13-2021 00:34
    Yes, the chemical voicing that was done in the "Dissecting the Tone of Piano Hammers" videos, was on Renner Blue points in a Baldwin R. The piano went to Ohio were it is played on everyday and is on a regular maintenance schedule.  At the time, i was not a Renner Hammer fan,but  in my opinion, the chemical voicing on a hard pressed hammer is a game changer. Unlike needling, it adds a sweetness to the sound.

    -chris

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    Chernobieff Piano Restorations
    "Where Tone is Key"
    chernobieffpiano.com
    grandpianoman@protonmail.com
    Lenoir City, TN
    865-986-7720
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  • 16.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-13-2021 01:20
    Felt can take some heat without altering it (can't remember what that temperature is now but there is some room under the ceiling where you're not doing damage.  But you can press a hammer very hard without heat and Renner has the machines set for a certain level of pressing which means that the level can be altered or varied.  It seems to be a matter of appealing to the greatest level of demand.  The Blue Points and Premium Blues are, in fact, softer than many hammers Renner presses.  Try working up a Bosendorfer hammer from scratch sometime.  Each manufacturer, it would seem, has their own standard.  The trend is needle down, not lacquer up--except with Steinway.   I would like to see options but unless you want to order x number of sets that won't happen.  

    Weight, I think, varies more with molding and how wide the hammers are cut when they cut them apart.  There is quite a variation in the width often.  I don't think the felt density varies enough to alter the weight significantly from hammer to hammer.  At least it doesn't seem so when you pre-needle a set.  They generally seem pretty consistent in density.

    I just think you have to be fairly aggressive on many hard pressed hammers near the strike point.  I find this especially true with many Abel sets, at least after any amount of play in.  You have to needle very high on the shoulder and deep, near the crown (though not deep directly into the crown).  Often some aggressive, but shallow, crown needle helps and I sometimes start with that just to take the edge off.  Saves my ears.

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    David Love RPT
    www.davidlovepianos.com
    davidlovepianos@comcast.net
    415 407 8320
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  • 17.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-13-2021 05:47
    I am aware of the changes in weight that can come as one piece of wood transitions to the next in a hammer molding.  I am also aware of the occasionally large variations in width from hammer to hammer within a molding.  However, I made a point of checking the widths of the moldings after I weighed them to determine if that were the cause.  My digital caliper showed that they were remarkably consistent, so the moldings will affect the weight differential less in this case..  

    Often the molding pieces that are joined together fall in the 3 to 4 inch range in width, and we most often notice the weight differences as we transition from one piece to a new one.  

    We almost always notice some differences in felt density front to back and as we transition within the scale.  Whatever consistency others may observe in Renner hammers, the variations seemed greater to me in this set, judging from the feel of my needles.  

    I have voiced more sets of Blues than I can count, my own and those of others over the years.  I am less familiar with the Blue Points, but I have voiced several sets of them.  I have voiced many sets of Renner hammers from various European makers, many of which would fall in the Renner Rock range.  
    As a voicer, I play the hand I am dealt and see that as my job.  I have both experience and success with hard hammers.  Every set of hammers is different, and I do not expect it to be otherwise.  I really like working with needles to build tone

    i stand by my comments about this set of Blue Points.

    I will try to send a post with an attached Excel spreadsheet of the hammer weights when I get to the shop this morning.  I will make some more comments at that time. 


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    William Truitt
    Bridgewater NH
    603-744-2277
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  • 18.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-13-2021 08:20
    Can anyone tell me how to attach an Excel file to my message?

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    William Truitt
    Bridgewater NH
    603-744-2277
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  • 19.  RE: voicing question Baldwin F

    Posted 07-13-2021 08:31
    Try the "upload file" box which is to the  bottom right of the box you type your reply in.

    Re the 1 gram weight differential and what is responsible for it note to note, as evidence of my statement, I often run into crazy weight differences in the high treble 80-88, where there is next to no felt to create that differential.  The density of soft maple from stick to stick and even within one stick can be crazy. I have noticed, actually, that since Ray started making his own moldings, the weight differences within the glueup seem to be more aggressive. I hope its just part of the learning curve for him.

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    Jim Ialeggio
    grandpianosolutions.com
    Shirley, MA
    978 425-9026
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  • 20.  RE: voicing question Baldwin F

    Registered Piano Technician
    Posted 07-13-2021 09:23
      |   view attached
    thanks, Jim.  Got it.

    Mostly we are trying to take more weight off in the top octave or so.  I find the only way I get there is by doing very slight full side tapers to equalize the hammer weight progression.  This is done before the hammers are hung, too difficult otherwise to control.  

    I weigh every set of Ronsens (or any hammer) prior to starting, and make note of the differences.  I make a graph of my start points and end points, which you will see in the attached file (fingers crossed).  Have at it.  

    It is easier to add weight than take it off, particularly since I have changed my method of doing so.  Upon Bruce Clark's suggestion, I have been putting my wire in the hollow WNG shank after goobering some RX Gel onto the wire so it will stay put in the tube.  I see no reason to use lead since copper is pretty heavy, so I ordered some round copper wire from Rio Grande Jewelry Supply.  Mostly I am using a single piece of wire  (.110"  snipped to a length that gives me the desired weight).  One piece, goober the RX, insert, and I am done.  Very fast, and I can land on the dime.  If I only need to add .1 or .2 gram, I will use a thinner piece of wire.  No more drlling multiple holes in the molding, filling, and snipping them off as needed.  About 1/3 of the time I would say, and simple.

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    William Truitt
    Bridgewater NH
    603-744-2277
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    Attachment(s)



  • 21.  RE: voicing question Baldwin F

    Posted 07-13-2021 09:30
    Will,  So you jumped ship on the White Church's Weikerts?

    How did that hammer removal and rehanging on the WNG shanks go?  Any pointers?

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    Jim Ialeggio
    grandpianosolutions.com
    Shirley, MA
    978 425-9026
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  • 22.  RE: voicing question Baldwin F

    Posted 07-27-2021 21:32
    this is a test.

    this is only a test....

    Thanks.