tag:blogger.com,1999:blog-2807403883562053852.post7056280253522549012..comments2024-03-27T08:40:31.785-06:00Comments on Clayton Cramer.: Adapting Carbon Fiber Composite Tube To Moonlite Telescope's BlocksClayton Cramerhttp://www.blogger.com/profile/03258083387204776812noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-2807403883562053852.post-65182949782754507582013-03-13T01:28:04.945-06:002013-03-13T01:28:04.945-06:00Be careful of corrosion when using graphite and al...Be careful of corrosion when using graphite and aluminum. See the wiki on graphite and search for "aluminium".Anonymoushttps://www.blogger.com/profile/13477165875493262384noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-85347571606480930302012-04-19T21:05:18.360-06:002012-04-19T21:05:18.360-06:00Agreed. Epoxy a 1" od x 3/16" wall extru...Agreed. Epoxy a 1" od x 3/16" wall extruded seamless tube onto the end of the tube and call it a day. You probably don't even need to turn the I.d. because you'll need to sand the tube to roughen it a bit anyway.for that matter. Use a 5/32" or 1/8" wall tube and you'll have room for the epoxy. I doubt concentricity for this will be that big of a deal.Rorschachhttps://www.blogger.com/profile/11848860674369931761noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-36707605610400119442012-04-19T20:51:40.601-06:002012-04-19T20:51:40.601-06:00Epoxy bonding hints:
If you have a boring bar, yo...Epoxy bonding hints:<br /><br />If you have a boring bar, you can put grooves around the circumference at few locations down the hole to give a hard lock for the epoxy into the aluminum.<br /><br />Clean the bore scrupulously with fairly dilute detergent, then abrade with sandpaper, rinse several times, then wipe down with alcohol. You want a textured surface and zero oily residue.<br /><br />Abrade (80 grit) the end of the carbon fiber tube to give it tooth and ridging (circumferential orientation), and to remove any surface residues from its original fabrication.<br /><br />Use freshly bought epoxy and mix a small proof batch to test for competent cure, before you commit your work pieces.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-6822650466542047332012-04-19T20:38:53.071-06:002012-04-19T20:38:53.071-06:00You might need to go a little larger on the boring...You might need to go a little larger on the boring - you need SOME space for the epoxy.Sendariushttps://www.blogger.com/profile/13286039362709773644noreply@blogger.comtag:blogger.com,1999:blog-2807403883562053852.post-80588753135775132472012-04-19T15:27:58.909-06:002012-04-19T15:27:58.909-06:00I machined parts for satellites from titanium. th...I machined parts for satellites from titanium. they were basically really expensive elbows for carbon fiber tubes. The engineer told me the elbow was joined to the tubes with epoxy.Marcusnoreply@blogger.com