I posted to the list about a year ago asking about CA glue on pins. I had about 20 positive replies from technicians and about 2 negative. I've used the CA glue method on about 20 pianos in the last year. Here's my experience. *I haul the piano to my shop, tip it over on its back with a tilt truck, usually drive the pins in (but not always), apply CA glue carefully around the holes, then apply accelerator. CA glue just doesn't seem to bond with wood otherwise. * I'm ready to start the pitch raise/tunings instantly. There is no waiting. *If the tuning pins are really loose, the dampers can be misleading...meaning, since the piano wasn't up to pitch, poor damping may not be present but after you get the piano holding at the higher tension, the increase in string tension, can cause the dampers to not damper properly. It's good practice to try and factor that into your estimate. * I end up doing at least 1 piano a month, but often times 2. * When you have a techy-type customer, he/she may bombard you with questions such as will it be so tight, the pins will break...the glue cannot go that far down into the hole, etc. *This job can be a pretty good money maker when you factor the pitch raise and about 3-5 tunings. Again, it boils down to educating your customer. They need to know what they are paying for (4 tunings getting it back to pitch). They also need to know that they need to retune it in 3-6 months because it will adjust to being back at pitch, especially if you drove the pins in. * I have never seen a case where a glycerin/denatured alcohol treatment worked. * I have never seen a case where a properly installed climate control system corrected loose pins. * It seems that loose pins are a way of life in Arizona. We usually have about 5% humidity or less here. I'm sure others have had sucess in different climates, but this has been my experience. regards Ron
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