<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=US-ASCII"> <META content="MSHTML 6.00.2800.1400" name=GENERATOR></HEAD> <BODY id=role_body style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: = Arial" bottomMargin=7 leftMargin=7 topMargin=7 rightMargin=7> <DIV> <DIV>   David</DIV> <DIV>   WOW!  Thanks for the informative list.= I'm printing it out for the 3 apprentices in shop. No wonder I no longer wish to= twist every screw in the shop myself. Iv used a Milwaukee /batt. operated screwdriver for years. It has saved my sanith & wrists. No wonder I'm al= l screwed up.</DIV> <DIV>     Dale Erwin</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><= FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size= =2>Dear Friends, About a month ago I was doing a prep on an older Kawai KG-= 2A grand piano and tightened all of the bolts and screws on the piano.&nb= sp; Just for fun I counted all of the screws and bolts I tightened, probab= ly because I am compulsive!  I realize this may be a big waste of yo= ur time, but I do have a few questions at the end. There are a bun= ch of screws on a grand piano!  I think you could probably break it = down into 3 categories. 1.  Case (Pinblock, Plate, Bench, hinge and= hardware screws and bolts.  This would be all of the bolts and sc= rews that are accessible without getting on your hands and knees or without= opening up the action). 2.  Action Screws (Action, keyframe, spring and action cavity screws.  Including all screws accessible= inside the action cavity). 3.  Undercarriage Screws (Leg, Lyre= , trapwork, etc.  All of the bolts and screws underneath the piano) Here for your amazement and amusement is a list of the screw= s I tightened. 1.  Case Bench - 4 bolts and 32 screws Music = Desk - 62 screws Top Lid long hinge - 44 screws Lid log - 8 screws Sid= e hinges on top lid - 18 screws Lid prop cups - 3 screws lid prop hard= ware - 4 screws Music desk guides (on inner rim of piano) - 6 screws Thro= ugh plate into stretcher - 3 screws plate web - 23 screws plate perimeter  - 7 screws 2.  Action leg plates, spring, a= nd key cover hardware - 25 screws key upstop rail - 4 screws Damper underlever flange - 69 screws Damper tray - 4 screws hammer flange -= 88 screws wippen flange - 88 screws action brackets - 10 screws Acti= on rails - 20 screws hammer rebound rail - 10  screws and nuts underside of keyframe - 17 screws 3..  Undercarriage Rear leg plate - 8 screws Lyre braces and lyre - 12 Trapwork - 12 screws Keybed - 22 screws leg and lyre bolts - 8= bolts keycover - 6 screws cheek blocks - 4 screws keyslip - 15 screws It makes sense to me that if I keep the screws tight it will= benefit the piano by eliminating noise, improving tone and volume, kee= ping parts aligned and keeping the piano from falling apart. 1.&nbsp= ; How critical is it to tighten all of these screws? I would guess that o= n a concert grand, you would do all of this at least once a year, but for other pianos it may not be as important (unless the customer wants to = pay for it).  And on a Winter spinet it would never get done because = the piano never gets tuned anyway, let alone any cleaning or tightening! 2.  Does anyone keep track of this for the pia= nos you service?  For a school with many pianos, it would be easy to forget which pianos you tightened and which pianos still need tightening.  I am thinking of making a list of all the pianos and= each time I tune, picking an area and tightening all the screws in one= area, such as tightening all case screws.  Then next time, I will= see on the list that I need to tighten the action screws.  And eventu= ally all the undercarriage screws would be tightened.  This would make= sure that the work gets done on every piano on a rotating basis. Just rambling thoughts!  Have a nice day David Vanderhoofven Registered Piano Technician</BLOCKQUOTE></DIV> <DIV></DIV> <DIV> </DIV> <DIV> </DIV> <DIV>Erwins Pianos Restorations 4721 Parker Rd. Modesto, Ca 95357 209-577-8397 Reb= uilt Steinway , Mason &Hamlin Sales www.Erwinspiano.com</DIV></BODY></HTML>