<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><BR><DIV><DIV>On Jun 2, 2006, at 4:03 AM, H. Peet Foster 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: Arial; 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; ">The left hinge on my tibook has stared to sound very dry and is beginning to squeak. As this was replaced (under Applecare) about 1yr ago after freezing up and snapping, I am wondering if there is a lubricant (WD40?) that should be applied.</SPAN></BLOCKQUOTE><BR></DIV><DIV>If you still have AppleCare, you can call them to see if they have an official recommendation. Otherwise, we might want to be careful of lubricants because I think there are some circuit strips running through there for the display that could be damaged by the chemicals. WD-40 is a silicone lubricant that has solvents and anti-rust compounds that might be a little harsh. I think a small amount of plain silicone spray or graphite (lock lubricant) would be safer. Maybe even a drop of mineral oil might be OK, though it might have a higher probability of holding dirt and grit over time.</DIV><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Arial; 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; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Arial; 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; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Arial; 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>-- </DIV><DIV>Dennis Fazio</DIV><DIV><A href="mailto:dfz@mac.com">dfz@mac.com</A></DIV><DIV><BR class="khtml-block-placeholder"></DIV></SPAN></SPAN><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></BODY></HTML>