<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><BR><DIV><DIV>On Apr 19, 2007, at 1:08 PM, Fred Sturm wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 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; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; ">Hi Jeff,<BR><DIV><SPAN class="Apple-tab-span" style="white-space:pre"><SPAN class="Apple-style-span" style="white-space: pre; "> </SPAN></SPAN>I don't get your question. You seem to be saying two opposite things. Wire fatigue is caused by bending and re-bending at a single point, not wearing out from abrasion. If abrasion causes string breakage, then a harder capo might contribute. Abrasion is not wire fatigue. But if it is flexing at the bearing point that causes breakage, then hardness doesn't enter into it. Flexing does cause wire fatigue.<BR><DIV><DIV>Regards,</DIV><DIV>Fred Sturm</DIV></DIV></DIV></SPAN></BLOCKQUOTE></DIV><BR><DIV>....and I also didn't finish reading your earlier post before I posted this reply to some excerpts from it. My bad. Yes, that makes sense. It would seem plausible to me, though, that abrasion would also be a contributing factor IF wire does break sooner on a harder capo. The combination of the two...</DIV><BR><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 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; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV>Jeff Tanner, RPT</DIV><DIV>University of South Carolina</DIV><DIV><BR class="khtml-block-placeholder"></DIV><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></BODY></HTML>