<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Don,</div><div><br class="webkit-block-placeholder"></div><div>That's basically what I meant with my first possibility ("nap of the cloth changing"), although you express it much more clearly. I looked to see if the pins were roughly cut on the ends, but they actually looked like pretty clean cuts. It's quite possible the cloth is being roughed up by either my extracting pliers, or a rough pin end, but it just surprises me how much more friction was being added; we're talking about going from 12 swings )maybe more) of the hammer to noticeably tight (coupla swings) just by replacing the pin. Have you ever experienced such a difference?</div><div><br class="webkit-block-placeholder"></div><div>Your idea of the sharp tip catching makes sense, too, although almost every pin I replaced behaved like this, so maybe that's not as likely.</div><div><br class="webkit-block-placeholder"></div><div>Well, the repinning went fine, so it's not really a problematic situation I'm inquiring about here. Just sort of mysterious. It'd be nice to understand what's going on.</div><div><br class="webkit-block-placeholder"></div><div>By the way, by chance I happened upon your very first PTJ article on center pin broaches (where you instructed us how to make our own) recently, and enjoyed it very much. The broaches certainly make repinning a lot more systematic and consistent.</div><div><br class="webkit-block-placeholder"></div><div>Thanks,</div><div><br class="webkit-block-placeholder"></div><div>Allen Wright</div><div><br class="webkit-block-placeholder"></div><div><br><div><div>On May 15, 2008, at 5:39 AM, Don Mannino wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div><font face="Arial" size="2">Allen,</font></div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2">It's hard to say for sure, but a few more possibilities:</font></div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2">- Pushing the old pin out disturbed the cloth fibers substantially. This can happen especially when the original pin was cut on both sides, and you have pushed a 'burr' through the bushing in the process of extracting the pin. The pin extraction tool could also theoretically be rough or bent at the tip, disturbing the cloth a lot when pushing the pin through.</font></div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2">- When installing the new pin, the point of a sharp pin will sometimes snag wool fibers on the through the bushing, causing the fit to become tight. This doesn't usually happen consistently.</font></div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2">Don Mannino</font></div><div><font face="Arial" size="2"></font> </div><blockquote dir="ltr" style="padding-right: 0px; padding-left: 5px; margin-left: 5px; border-left-color: rgb(0, 0, 0); border-left-width: 2px; border-left-style: solid; margin-right: 0px; "><div style="font: normal normal normal 10pt/normal arial; ">----- Original Message -----</div><div style="background-image: initial; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: rgb(228, 228, 228); font: normal normal normal 10pt/normal arial; background-position: initial initial; "><b>From:</b><span class="Apple-converted-space"> </span><a title="akwright@btopenworld.com" href="mailto:akwright@btopenworld.com">Allen Wright</a></div><div style="font: normal normal normal 10pt/normal arial; "><b>To:</b><span class="Apple-converted-space"> </span><a title="pianotech@ptg.org" href="mailto:pianotech@ptg.org">Pianotech List</a></div><div style="font: normal normal normal 10pt/normal arial; "><b>Sent:</b><span class="Apple-converted-space"> </span>Wednesday, May 14, 2008 4:27 PM</div><div style="font: normal normal normal 10pt/normal arial; "><b>Subject:</b><span class="Apple-converted-space"> </span>center pinning question</div><div><br></div>In repinning an old (1930's) Steinway M, quite a few were loose. I found that replacing the old pins with the exact same size (but new) pins was producing just the amount of friction needed - and even in some cases adding too much, so that I had to ream with my "Mannino" burnishing files. Any theories on how that happens? Something to do with the nap of the cloth changing in the process, or perhaps the angle of the pin changing in the bushing, or (even more unlikely) that somehow only the outer edges of the pin are slightly worn on the old pins? (These are the various ideas me and my colleagues were coming up with to explain the phenomenon).<div><br class="webkit-block-placeholder"></div><div>Thanks, and I'll take my answer off the air... : )<br><div><br class="webkit-block-placeholder"></div><div>Respectfully,<br><br><div><span class="Apple-style-span" style="word-spacing: 0px; font: normal normal normal 12px/normal Helvetica; text-transform: none; color: rgb(0, 0, 0); text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="word-spacing: 0px; font: normal normal normal 12px/normal Helvetica; text-transform: none; color: rgb(0, 0, 0); text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="word-spacing: 0px; font: normal normal normal 12px/normal Helvetica; text-transform: none; color: rgb(0, 0, 0); text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="word-spacing: 0px; font: normal normal normal 12px/normal Helvetica; text-transform: none; color: rgb(0, 0, 0); text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; "><div>Allen Wright. RPT</div></span></span></span></span></div><br></div></div></blockquote></span><br class="Apple-interchange-newline"></blockquote></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>Allen Wright</div><div>London, UK</div><div><br class="webkit-block-placeholder"></div><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Arial" size="3" style="font: normal normal normal 12px/normal Arial; "><a href="http://www.broadjam.com/akwright">http://www.broadjam.com/akwright</a></font></div></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span><br class="Apple-interchange-newline"></span></span> </div><br></div></body></html>