<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">i would bet it's silicon<div><br><div><div>On 26-Nov-10, at 5:24 PM, Darcy Whyte wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><br></div><div><br></div><div><br></div><meta http-equiv="content-type" content="text/html; charset=utf-8"><span class="Apple-style-span" style="font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 14px; color: rgb(91, 91, 91); line-height: 20px; "><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-weight: inherit; font-style: inherit; font-size: 14px; font-family: inherit; vertical-align: baseline; "> I decided to make a CNC laser cutter with some material handling capabilities for my model plane project.</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-weight: inherit; font-style: inherit; font-size: 14px; font-family: inherit; vertical-align: baseline; "> I have some surgical tubing for the water jacket (the CO2 laser tube is water cooled). It seems to brown the water and I don’t like that since it might accumulate some material in the water jacket. I realize I can clean the jacket with hydrochloric acid but I figure it’s a better idea to not have any material going through the system.</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-weight: inherit; font-style: inherit; font-size: 14px; font-family: inherit; vertical-align: baseline; "> The laser itself has some nice white colored tubing on it to connect the various water jackets. I’m curious if anybody knows what it is so I can replace my surgical tubing with it.</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-weight: inherit; font-style: inherit; font-size: 14px; font-family: inherit; vertical-align: baseline; "> <a href="http://mambohead.com/2010/11/cnc-laser-cutter-construction/">http://mambohead.com/2010/11/cnc-laser-cutter-construction/</a></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-weight: inherit; font-style: inherit; font-size: 14px; font-family: inherit; vertical-align: baseline; "> <br><a href="http://mambohead.com/wp-content/uploads/2010/11/IMG126.jpg" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-weight: inherit; font-style: inherit; font-size: 14px; font-family: inherit; vertical-align: baseline; color: rgb(33, 117, 155); text-decoration: underline; "><img class="alignnone size-medium wp-image-182" title="IMG126" src="http://mambohead.com/wp-content/uploads/2010/11/IMG126-300x225.jpg" alt="" width="300" height="225" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; 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"></a></span><span class="Apple-style-span" style="font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 14px; color: rgb(91, 91, 91); line-height: 20px; "><a href="http://mambohead.com/wp-content/uploads/2010/11/100_1884.jpg" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-weight: inherit; font-style: inherit; font-size: 14px; font-family: inherit; vertical-align: baseline; color: rgb(33, 117, 155); text-decoration: underline; "><img class="alignnone size-medium wp-image-196" title="100_1884" src="http://mambohead.com/wp-content/uploads/2010/11/100_1884-300x225.jpg" alt="" width="300" height="225" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; 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