{"id":278,"date":"2014-12-24T20:57:48","date_gmt":"2014-12-24T10:57:48","guid":{"rendered":"http:\/\/www.eyemonline.com\/?p=278"},"modified":"2014-12-24T20:59:44","modified_gmt":"2014-12-24T10:59:44","slug":"desktop-cnc-progress","status":"publish","type":"post","link":"http:\/\/www.eyemonline.com\/?p=278","title":{"rendered":"Desktop CNC Progress"},"content":{"rendered":"<p>I put in a couple of solid days working on the ShapeOko desktop CNC. The following has been achieved:<\/p>\n<ul>\n<li>Upgraded grbl to 0.9g.<\/li>\n<li>Combined\u00a0stepper and limit switch \u00a0wiring into a single 7 core cable.<\/li>\n<li>Installed drag chain for cable management and routed the cables<\/li>\n<li>Discovered the stepper signals interfering with the limit switches. Installed 0.47uF electrolytic capacitors to smooth out the signal. Thank to this <a title=\"link\" href=\"http:\/\/www.instructables.com\/id\/End-Stop-Limit-Switch-Problems\/?ALLSTEPS\" target=\"_blank\">link<\/a> for the solution.<\/li>\n<li>Added touch plate and alligator clip for the new probe cycle. Also need a capacitor to fix interference problems.<\/li>\n<\/ul>\n<p>The new probe cycle greatly simplifies the process of setting the Z height. I like it a lot. I&#8217;m using a piece of un-ethced\u00a0PCB which measures 1.6mm thick. I put this on the top of the workpiece, run the probe cycle (G38.2 Z-100 F50). When the tool touches the top of the PCB I subtract 1.6mm from the Z position and set the tool offset with G43.1 Z(position &#8211; 1.6).<\/p>\n<p>I ran a couple of jobs with a 3mm, 2 flute cutter on poplar (soft wood). Initially the tool load was too high at 30,000 rpm and 750 mm\/min feed. This caused the steppers to mis-step and lose position. After dropping the feed to 250 mm\/min everything was OK.<\/p>\n<p>I finished the day by make a Christmas tree shaped ornament for the Christmas tree.<\/p>\n<p>On the To Do list is:<\/p>\n<ul>\n<li>Enclose the mill to control dust and noise. Currently there is a lot of dust and a lot of noise.<\/li>\n<li>Control the router with <a title=\"Super-PID\" href=\"http:\/\/www.vhipe.com\/product-private\/SuperPID.htm\" target=\"_blank\">Super-PID<\/a>.<\/li>\n<li>Fully enclose the electronics, including power supply.<\/li>\n<li>Upgrade the frame to be similar to ShapeOko v2.0.<\/li>\n<li>Get a T-Slot Table Plate to replace the waste board.<\/li>\n<li>Modify X and Y axis drives to NEMA 23 steppers with dual steppers on the Y axis.<\/li>\n<li>Modify the belt drive taking inspiration from <a title=\"Bell Everman\" href=\"https:\/\/www.youtube.com\/watch?v=OdJoVh6DRPA\" target=\"_blank\">Bell Everman<\/a>.<\/li>\n<li>Replace the Z axis M8 standard all-thread with SS all-thread for better accuracy.<\/li>\n<\/ul>\n<p>I also discovered that ShapeOko v3.0 has just started taking pre-orders. I don&#8217;t think that the financial controller with authorise the purchase \ud83d\ude41<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I put in a couple of solid days working on the ShapeOko desktop CNC. The following has been achieved: Upgraded grbl to 0.9g. Combined\u00a0stepper and limit switch \u00a0wiring into a single 7 core cable. Installed drag chain for cable management &hellip; <a href=\"http:\/\/www.eyemonline.com\/?p=278\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[5],"tags":[21,7,8],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p3FgN7-4u","_links":{"self":[{"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=\/wp\/v2\/posts\/278"}],"collection":[{"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=278"}],"version-history":[{"count":3,"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=\/wp\/v2\/posts\/278\/revisions"}],"predecessor-version":[{"id":281,"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=\/wp\/v2\/posts\/278\/revisions\/281"}],"wp:attachment":[{"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=278"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.eyemonline.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}