Bill, I like your approach of applying the accelerator with a syringe. However since I need to get away from the fumes as quickly as possible when doing pins it is the spray that is used. Most other repairs do not get sprayed but a drop of accelerator applied with the end of the spray tube. I leave the little plug in the end of the tube (except for when using the spray <G>) so that the accelerator will not evaporate. This also keeps the tube from becoming clogged when applying accelerator to the glue. Joe Goss Always on the level, well traveled, and now at http://www.primenet.com.~imatunr/ ---------- > From: BSimon1234@AOL.COM > To: pianotech@ptg.org > Subject: CA accelerator misting of pinblock? > Date: Sunday, May 09, 1999 2:47 AM > > Joe Goss wrote; > > <<You do not need to use activator if you are able to come back the next day > to tune.>> > > I would have thought so also, but in our dry environment in Phoenix it ain't > necessarily so. Here, if you put a large puddle of CA glue on glass, say > about the size of a half or silver dollar, 24 hours later it will likely be > totally liquid in the center, with just the edges of the puddle cured. Put a > tiny bit of accelerator on it and two minutes later the whole thing is cured > solid. > > I did a horrible grand once, very heavily treated with some brown pin > tightener that left a heavy sticky residue around the pins. I treated the > piano heavily with CA glue, and the stuff was still liquid the next day. ( > perhaps there was some interfering chemical reaction) I did not know of > accelerators back then, other than water. Consequently, now when I treat the > whole piano now, I go back and at the base of each pin I put a microscopic > drop of the accelerator, using a 1 cc insulin syringe with a #25 needle, > which is incredibly tiny, and makes very tiny drops. Across the whole piano > I use only one or two cc's of accelerator. You can see the CA glue cure > solid and wrinkle a bit. > > Joe Goss said; <<When using the activator as a spray, try to protect the bass > strings by > shielding them with an old newspaper or anything handy, held in your hand > and moving it along as you spray.>> > > BIG QUESTION - Is it a good idea to spray the stuff over the pins, coils, > plate, etc???? According to the Material Safety Data sheets I have, most > accelerators are just Dichlorofluoroethane. It is 100% volatile, rather > rapidly at that, and if it doesn't hurt the plate, finish, strings,etc, - > then why not mist it on? I have been too cautious to do so, but I would like > to hear of any other's experience and any problems in doing so. > > Thanks, > > Bill Simon > Phoenix > >
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