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Methanol

  • 1.  Methanol

    Registered Piano Technician
    Posted 04-19-2025 18:21

    I'm trying to get an otherwise nice 50 year old Wurlitzer studio upright action going. The hammer flanges are chronically tight and lubrication has proven to be only a temporary fix.

    It's been a long time since I've tried "watering" the action, I know methanol is the preferred alcohol but I'm having trouble sourcing it. Is there an alternative? Should I try straight water first? I'm trying to find an alternative to repining the whole action.

    Thanks in advance.



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    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
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  • 2.  RE: Methanol

    Registered Piano Technician
    Posted 04-19-2025 18:29
    Everclear works.





  • 3.  RE: Methanol

    Registered Piano Technician
    Posted 04-19-2025 18:34
    Oops, hit send too soon. 

    The problem with straight water is that, besides probably being too strong undiluted, it's going to want to bead up instead of soaking into the felt. The alcohol acts as a surfactant to get it in there.

    But yeah the nice thing about everclear aka grain alcohol is that it hasn't had any unknown stuff added to it for "denaturing", so we know what we're dealing with.. Plus if you ever want to try B72 voicing you'll have it on hand. 





  • 4.  RE: Methanol

    Registered Piano Technician
    Posted 04-19-2025 18:40

    They don't sell it here.

    Apparently there's a "food grade" culinary alcohol I can order, pretty expensive.



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    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
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  • 5.  RE: Methanol

    Registered Piano Technician
    Posted 04-19-2025 18:53
    Bummer. 
    Any chance you can get the 151-proof (75%) version instead? Probably too weak for B72, but that's a reasonable ratio for treating action centers...

    Edit: there's an older thread where a bunch of alternatives are discussed, like isopropyl from the drugstore, vodka (being like 60% water it's kinda "strong" in this application) or denatured alcohol... 

    https://my.ptg.org/communities/community-home/digestviewer/viewthread?GroupId=1165&MID=569797&CommunityKey=06a50b7b-c49f-4c2a-b32b-ef78b4ed51cc&tab=digestviewer





  • 6.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 10:28
    What percentage of alcohol and water?

    Sent from my iPhone




  • 7.  RE: Methanol

    Registered Piano Technician
    Posted 04-19-2025 18:48
    Steve

    If this is a Baldwin made Wurlitzer, it was my experience that if Protec and a Damp Chaser didn't ease up the centers, the only alternative was repinning.

    Wim





  • 8.  RE: Methanol

    Registered Piano Technician
    Posted 04-19-2025 19:14

    Wim, I'm sorry to hear that, though I think this piano predates the Baldwin Wurlitzer merger. I did bake the action in my car and it didn't have much affect. Not a good sign. 

    Nathan, thanks for the link, good to find out that there's nothing particularly wrong with using other types of alcohol.



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    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
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  • 9.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 01:12

    Steve, 100 proof Vodka should work fine 50/50 water/grain alcohol. However, I would do a few test notes as I don't know how vodka would work after treatments with Protek. Probably ok but I've never done vodka after protek. Anyone else done vodka/Everclear after Protek?



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    Tremaine Parsons RPT
    Georgetown CA
    (530) 333-9299
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  • 10.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 07:30
    Steve

    Baking it in your car is not the same as a DC in the piano. I would suggest you install one, and wait at least 2 weeks. 





  • 11.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 01:19
    I’m far from certain about this, but gas line antifreeze sold in auto parts stores is methanol. I have used it for verdigris, and it generally works quite well, and lasts much longer than lubricants like Protek. It does seize the parts initially.
    It sometimes frees the action parts enough that repinning may be necessary. It seems dubious that there would be any water in a product designed for car fuel systems.

    Joe Wiencek
    NYC




  • 12.  RE: Methanol

    Posted 04-20-2025 11:48

    TSI 301 is by far the best at cleaning action centers. If you want to enlarge the cloth, alcohol with a little water works. The correct amount of water is determined by observing absorbtion. Remember alcohol is the carrier and water is the worker. Personally, i prefer to just repin. 

    Using B-72 with an alcohol that has any water in it is equivelent to 2 steps forward 1 step back. Water % can be measured, i use lab equipment purchased from a wine supply co. . Denatured has 15% water, Everclear 5% etc. Most others are in the range of 10-15% water content. If you want an eye opening experience get 100% alcohol.and suddenly you get predictable results when voicing. Amazon has 99.9% isopropyl alcohol available. I highly recommend it, otherwise you kinda wasting your time when using a hardner that at the same time softens to some degree. Methanol is BTW the most toxic alcohol, your cautioned to avoid skin contact or breathe it.

    -chris



    ------------------------------
    Chernobieff Piano Restorations

    Inertia Touch Wave(ITW) The most advanced silky smooth actions.

    Engineered Hygroscopic Soundboards. The strongest and lightest boards made today for acoustic projection, richness and warmth.

    865-986-7720 (text only please)
    ------------------------------



  • 13.  RE: Methanol

    Registered Piano Technician
    Posted 04-21-2025 13:37
    TSI 301 is a gun cleaning product, right? Have you had luck with this for verdigris on older Steinway action centers, Chris? On another note, my experiment with B72 and acetone on previously treated (softened) top 7 hammers worked wonderfully!
    Sent from my iPhone




  • 14.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 13:20

    Did you mean to say Ethanol instead of Methanol? Ethanol is the alcohol that people drink. The stuff in Everclear and all the other drinkable alcohols. Methanol is a toxic alcohol that will make you go blind if you drink it. You can buy it in fuel additives like Heet. In addition to burning cleanly and pulling water out of fuel lines, I'm sure it also does interesting things to felt. But I don't think it would be widely used because of the toxicity issue. 

    I've had some luck with a liquid solution that Schaff used to sell but that I can't find anymore. It had a really strong smell. I can't remember the name of it. (Garfield?) I'd take the action outside, run a big bead of solution down the flange pins, wait 10 minutes for the smell to dissipate, then bring it back in, and all but the toughest flanges would work again. It was, in my mind, the intermediate step between CLP+friction and Repinning. 

    Out of curiosity, has anyone ever tried "ironing" the felt by heating the center pin without taking it out? I'm imagining a soldering iron with a pointy tip touching only the end of each pin for a short time. 



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    Anthony Willey, RPT
    http://willeypianotuning.com
    http://pianometer.com
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  • 15.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 14:01

    Thanks to everyone for their input. Anthony, the old Baldwin manual recommends Methanol. (for the hammers, not the cocktails.)



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    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
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  • 16.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 14:13

    Yes, this was tried using a device that was called the "Zapper".  It consisted of a tweezer that was energized by a doorbell transformer, and it would send current through the center pin.  This would produce a lot of heat and free up the flange.  Too much heat, and you'd smoke it.  I once did an experiment on some very sluggish hammer flanges.  I tried heating with a heat gun, I used my Zapper, I tried alcohol/water, and finally repinning.  I kept the action in my shop for about a week, and here's what I found.  Except for repinning, everything eventually became sluggish again.  My speculation is that the felt was shrunk to allow the pin to pass the friction test, but if there was any humidity introduced the felt would swell again.  Where there is a lot of moisture in the air, eventually these flanges will get sluggish.  Even if you put them in a hot-box (which I also use), excessive moisture will get in there again, unless you install a damppchaser to prevent it from sucking up moisture again. 

    Wurlitzer used to use a mix of silicone oil and naptha to lubricate their flanges.  Before Protek, that was a solution that some techs used to use, and Wurlitzer and I think some other manufacturers also.  I have had good luck on Wurlitzers using Protek, but that was not in a very humid situation here in San Diego.  If you wanted to experiment, both silicone oil and naptha are still available as far as I know.

    In my experiments, I used various strengths of alcohol/water, and repeated dousing of flanges had mixed results.  If I got too aggressive, I could get them free, but the hammers would become wobbly.  Especially if I used Protek afterwards, they were way too free with unlimited swings.  On a spinet or cheap piano, I wouldn't worry too much, but on a decent piano, alcohol/water is not predictable enough to get consistent results.  If you do use it, let it dry over time, not using a heat gun.  Then follow with Protek.  You might be surprised how much the Protek works after the alcohol/water treatment.



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    Paul McCloud, RPT
    Accutone Piano Service
    www.AccutonePianoService.com
    pavadasa@gmail.com
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  • 17.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 15:32
    You don't need to use anything too fancy.  Isopropyl alcohol from drug stores is usually 70% strength, and in this case I would add some water to bring it up to around 50% to make is stronger.  Straight water won't penetrate.

    The main concern is that it has been lubricated in the past, and this can make the water less effective. So, you might be stuck with having to repin if this piano needs to get working again.

    Don Mannino





  • 18.  RE: Methanol

    Registered Piano Technician
    Posted 04-20-2025 16:59

    I once used Cory KeyBrite to treat. I'm not sure how long it worked. A one time visit to a wurtilizer.



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    Larry Messerly, RPT
    Bringing Harmony to Homes
    www.lacrossepianotuning.com
    ljmesserly@gmail.com
    928-899-7292
    ------------------------------



  • 19.  RE: Methanol

    Registered Piano Technician
    Posted 04-21-2025 13:42

    A mechanic I knew when I was younger had a sign in his shop that said:   Rates: $20 per hour.  If you worked on it first: $40 per hour.   If you want to help: $60 per hour.  One of the chief pitfalls of treating action centers is when some amateur has been there first and tried the "obvious" solution: they've applied some oil.  Unfortunately only temporarily if at all.  Once the more volatile elements of the petroleum have evaporated, you're left with a stubborn gunk that gums up the works on a rather permanent basis.  The only way to detect this fatal fix is to try the usual water/alcohol treatment first and see if it helps.  Since this is primarily a fix for bushings that were not sized properly to begin with, it's only likely to help with spinets from the seventies when it was a common problem.  Older uprights are not prone to it though it may help with a sluggishness caused by a combination of disuse and high humidity.  If the water/alcohol does not do the job, you can follow with a treatment of naphtha, silicone oil.  (The naphtha, like the alcohol, is just there as a solvent: it evaporates quickly once it has done its job.)  This, at least can do no harm.   As has been noted too much water content in the alcohol solution can leave the bushings too loose.  Neither of these solutions are effective if the action is not heated up in a heat tent to around 140 degrees and then the parts worked vigorously for a while.  If the action centers have been oiled, neither of these "solutions" will solve the problem and you'll have to repin and preferably rebush as well.  Keep in mind, the bushings for each set of parts (hammers, whips, jacks, etc.) are pinned to different specs which vary considerably.  Measure them first before you dive in and treat them as needed.   It's not a one size fits all situation.



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    Cecil Snyder RPT
    Torrance CA
    (310) 542-7108
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  • 20.  RE: Methanol

    Registered Piano Technician
    Posted 04-23-2025 18:02

    I have been very satisfied using the TSI stuff. 301 and 321 are super slick. 

    Peter Grey Piano Doctor 



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    Peter Grey
    Stratham NH
    (603) 686-2395
    pianodoctor57@gmail.com
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  • 21.  RE: Methanol

    Posted 04-27-2025 21:51

    As has been stated, methanol is simply the surfactant which allows the water to soak into the cloth. But it is toxic, it can enter your system through the skin even the fumes are not good to inhale. Why use  that when ethanol (eg. vodka) does the same job at much lower health risk, as does iso-propanol.



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    Jurgen Goering
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