This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Thanks Joe for your reply, In fact, I was asking this question in the case of a concert = preparation. What would one do in such situation? You can't ruin your own piano hammers with hardener just for one pianist = who keeps complaining, but on the other hand, if the pianist is unhappy, = maybe you can have problems with him and the direction of the concert = hall. I tune for small concerts in my town area (as I work for a big shop with = a good concert service), the main concert halls are serviced by my boss, = and I have to get my education in smaller places, with smaller pianos, = and smaller "gifted" pianists, but it is a good start for me. Avery wrote: "Ping Pong balls??????? Never heard of that before!" I swear that's what I've heard, Avery !!!=20 I've never used the plastic keytop-acetone mix, but the principle = remains the same. I think the ping pong balls are made of celluloid, = this must make the difference between this hardening composition and the = plastic keytop with acetone mixture. I sometimes used collodion, like Andre's suggestion. I have one bottle = in my toolcase. I learned this on a factory tour and training at the = Seiler factory, in Germany, more than 3 years ago. Actually, I was a bit = too "young" in the profession to get all the benefits of this factory = visit. I would love to do it again right now. At that time, I was not such a "learning sponge" and I was technically = not ready ;-) I will give the ping pong with acetone mixture a try, but I have to find = the ideal "victim". I have in mind one old Young Chang upright that went = back from one of our clients in our workshop, and that has been needled = to much by another technician. This could be interesting for a first attempt. Have a good Sunday afternoon (as it is 22.00 Pm here in France). Quentin ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/cd/ae/25/82/attachment.htm ---------------------- multipart/alternative attachment--
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