http://diylilcnc.org/forum/tags/belts Free, open-source plans for a low-cost 3-axis CNC mill by Taylor Hokanson and Chris Reilly. Sponsored by the School of the Art Institute of Chicago. en-US Sat, 31 Jul 2010 19:26:33 +0000 http://bbpress.org/?v=1.0.2 q http://diylilcnc.org/forum/search.php http://diylilcnc.org/forum/topic/questions-on-the-build#post-185 Sun, 17 Jan 2010 23:45:36 +0000 Chris 185@http://diylilcnc.org/forum/ <p>Bill, congrats on your progress so far! </p> <p>You are right about the shaft collar omission from the parts list, sorry about that! <strike>We'll have that updated in the next hour or so.</strike> The parts list has been updated in the <a href="http://diylilcnc.org/downloads">downloads</a> section. </p> <p>Here's the <a href="http://www.mcmaster.com/#catalog/116/1151/=5ezf7s">link to the McMaster catalog page</a>, its part number 9414T6 and there are three used in the current version. They're about $0.60 each.</p> <p>The purpose of the coupler is to sandwich in the imperial bearing opposite the motor and keep it from falling out of the bracket. If you're getting a tight fit already, you can probably run without a coupler, at least temporarily.</p> <p>You can also get by just fine with a piece of tape or a rubber band in place of the shaft couplers. We ran our test builds for quite some time with just a little piece of tape on the ends of each shaft, and that was enough to keep everything in place. </p> <p>As for the belts, three equal sections (~4' each) will give you plenty of belt to work with. </p> http://diylilcnc.org/forum/topic/questions-on-the-build#post-184 Sun, 17 Jan 2010 00:55:30 +0000 Bill 184@http://diylilcnc.org/forum/ <p>So I'm putting together the Z Cart partial assembly and have a couple of questions. First, after the X-motor mount is attached the instructions say to attach the <strong>shaft collar</strong> to the end of the <strong>X-drive shaft</strong>. I see no <strong>shaft collar</strong> in the parts list and so never ordered any. Inadvertent omission? Second, could you give some approximate lengths to divide the 12 feet of belt into? I just want to make sure I don't cut it to short for any of the 3 belt sections. </p>