{"id":66,"date":"2012-10-15T23:25:23","date_gmt":"2012-10-15T22:25:23","guid":{"rendered":"http:\/\/blog.amberspyglass.co.uk\/?p=66"},"modified":"2012-10-15T23:25:23","modified_gmt":"2012-10-15T22:25:23","slug":"clean-room-build","status":"publish","type":"post","link":"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/","title":{"rendered":"Clean Room Build"},"content":{"rendered":"<p>I did a clean room build of the eShapeOko (using the spindle mounts from my ShapeOko, because ours haven&#8217;t arrived yet). The bad news is that I found several problems. The good news is that I got a working machine in the end, and it&#8217;s very nice. All problems are fixable, and they won&#8217;t delay the kits more than a few days. Here&#8217;s a list. The asterisks mark what we will do for the kits already ordered:<\/p>\n<ul>\n<li>BOM error: a belt tensioner (ES-LBT) is missing from the dual-Y upgrade BOM. \u00a0Fix*: add a belt tensioner.<\/li>\n<li>Model error leading to assembly problem: the screws for the X motor are too long. Temporary fix: added some washers. \u00a0Permanent fix*: supply M3 x 6 mm screws instead of 8 mm.<\/li>\n<li>Model error\u00a0leading to assembly problem: the spacers for the Y motors are too short. \u00a0Longer spacers allow motors with shafts shorter than 20 mm to work on Y, and make the assembly easier. \u00a0Temporary fix: added three 1.58 mm (1\/16&#8243;) nylon washers on each screw. \u00a0Permanent fix*: replace 19.05 mm (3\/4&#8243;) nylon spacers with 23.81 mm (15\/16&#8243;) spacers.<\/li>\n<li>Model error\u00a0leading to assembly problem: the screws for the Z motor are too long. \u00a0The next shortest screw available is too short. \u00a0Fix*: two 1.58 mm (1\/16&#8243;) nylon washers on each screw. \u00a0This was a problem with my ShapeOko kit too, but it&#8217;s more pronounced with the eShapeOko because our Z motor mount is slightly thinner.<\/li>\n<li>Laser cutting error: the central hole in the Z motor mount plate is ever so slightly too small &#8212; should have been 22.00 mm minimum, it is actually 21.96 mm. \u00a0The bearings are 21.98 mm diameter, so they don&#8217;t fit. \u00a0Temporary fix*: enlarged the hole slightly. \u00a0Permanent fix: change the drawings to call for a larger hole, because the tolerances specified were ignored by the fabricator.<\/li>\n<li>Laser cutting error: some of the 7.14 mm holes for the eccentric spacers are slightly oval, measuring about 7.14 x 7.11 mm. \u00a0The diameter of the eccentric spacers varies a little too: some fit (barely), some don&#8217;t. \u00a0Temporary fix*: reamed all eccentric spacer holes to the proper diameter (9\/32&#8243;). \u00a0Permanent fix: change the drawings to call for a slightly larger hole.<\/li>\n<li>Part design and quality problem: the belt clamps aren&#8217;t very good. \u00a0They are soft, hard to tighten well, and unless tightened <em>very<\/em> well, they slip. \u00a0Zip ties work better and are easier to fit. \u00a0Fix*: use zip ties instead of belt clamps. \u00a0A toothed belt clip would be ideal, but they are very expensive off the shelf. \u00a0We&#8217;re looking for a way to make a cheap one.<\/li>\n<li>Assembly difficulty: the Z leadscrew wobbles if the locking washer is used. \u00a0Fix*: discard the locking washer; tighten the nuts directly against the inner ring of the Z bearing. \u00a0No wobble!<\/li>\n<\/ul>\n<p>As you can see, there&#8217;s some reaming and minor Dremeling to do, and new screws and spacers (and zip ties) to order. \u00a0It&#8217;s very likely that everything will be here this week, so that we can pack the kits over the weekend and ship them out on Monday.<\/p>\n<p>The good things: except for the missing belt tensioner, the BOM was otherwise accurate; every single washer found its place, and nothing was missing. The machine looks good, works well and seems sturdy. \u00a0It&#8217;s not terribly difficult to assemble and adjust. \u00a0The belt tensioners are sweet. \u00a0Everyone ordered the dual Y drive; the next largest source of unwanted movement is the X V-wheels, where the dual X rail will help (I have yet to do a clean room build for the dual X option). \u00a0The Z axis is very solid, and the good quality allthread helps a lot.<\/p>\n<p>Complete tool list:<\/p>\n<ul>\n<li>4 mm Allen key (for the M5 screws)<\/li>\n<li>2.5 mm Allen key (for the M3 screws)<\/li>\n<li>2 mm Allen key (for the flexible coupler grub screws)<\/li>\n<li>1.5 mm Allen key (for the MXL pulley grub screws)<\/li>\n<li>8 mm spanner (for the M5 nuts and the eccentric spacers); an adjustable wrench can be used, but it needs to be narrow enough to fit on the eccentric spacers. \u00a0An open-ended and ring &#8220;combination spanner&#8221;, like <a href=\"http:\/\/en.wikipedia.org\/wiki\/File:Kluc_ockoplochy.jpg\">this one<\/a>, is best<\/li>\n<li>two 13 mm spanners (for the M8 nuts); adjustable wrenches will do, or a vice and one spanner\/wrench (there are only two M8 nuts to tigthen, but they need to be <em>tight<\/em>)<\/li>\n<li>M5 tap and tap handle (for the MakerSlide and belt tensioners &#8212; both are aluminium)<\/li>\n<li>tapping fluid (or almost any kind of oil, including WD40 and mineral oil from the pharmacy. Boots Baby Sensitive Oil is better than WD40 and doesn&#8217;t smell)<\/li>\n<li>small open container (e.g. a ramekin) for the tapping oil (if needed)<\/li>\n<li>plastic brush to clean the tap (old toothbrush or nail brush)<\/li>\n<li>sandpaper for metal (200 to 400 grit), a piece the size of a business card (to deburr the MakerSlide ends)<\/li>\n<li>permanent marker (to mark the eccentric spacers)<\/li>\n<li>set square (to align the X rail)<\/li>\n<li>adhesive aluminium foil (a tiny amount is needed to help center the Z leadscrew in the coupler) &#8212; will be included in the kit<\/li>\n<li>scissors (for the belt and aluminium foil)<\/li>\n<li>small diagonal cutters (for the zip ties)<\/li>\n<\/ul>\n<div class=\"sharedaddy sd-sharing-enabled\"><div class=\"robots-nocontent sd-block sd-social sd-social-text sd-sharing\"><h3 class=\"sd-title\">Share this:<\/h3><div class=\"sd-content\"><ul><li class=\"share-twitter\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"sharing-twitter-66\" class=\"share-twitter sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=twitter\" target=\"_blank\" title=\"Click to share on Twitter\"><span>Twitter<\/span><\/a><\/li><li class=\"share-facebook\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"sharing-facebook-66\" class=\"share-facebook sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=facebook\" target=\"_blank\" title=\"Click to share on Facebook\"><span>Facebook<\/span><\/a><\/li><li class=\"share-email\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-email sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=email\" target=\"_blank\" title=\"Click to email this to a friend\"><span>Email<\/span><\/a><\/li><li><a href=\"#\" class=\"sharing-anchor sd-button share-more\"><span>More<\/span><\/a><\/li><li class=\"share-end\"><\/li><\/ul><div class=\"sharing-hidden\"><div class=\"inner\" style=\"display: none;\"><ul><li class=\"share-tumblr\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-tumblr sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=tumblr\" target=\"_blank\" title=\"Click to share on Tumblr\"><span>Tumblr<\/span><\/a><\/li><li class=\"share-pinterest\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"sharing-pinterest-66\" class=\"share-pinterest sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=pinterest\" target=\"_blank\" title=\"Click to share on Pinterest\"><span>Pinterest<\/span><\/a><\/li><li class=\"share-end\"><\/li><li class=\"share-linkedin\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"sharing-linkedin-66\" class=\"share-linkedin sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=linkedin\" target=\"_blank\" title=\"Click to share on LinkedIn\"><span>LinkedIn<\/span><\/a><\/li><li class=\"share-reddit\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-reddit sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=reddit\" target=\"_blank\" title=\"Click to share on Reddit\"><span>Reddit<\/span><\/a><\/li><li class=\"share-end\"><\/li><li class=\"share-pocket\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-pocket sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=pocket\" target=\"_blank\" title=\"Click to share on Pocket\"><span>Pocket<\/span><\/a><\/li><li class=\"share-print\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-print sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/\" target=\"_blank\" title=\"Click to print\"><span>Print<\/span><\/a><\/li><li class=\"share-end\"><\/li><li class=\"share-end\"><\/li><\/ul><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>I did a clean room build of the eShapeOko (using the spindle mounts from my ShapeOko, because ours haven&#8217;t arrived yet). The bad news is that I found several problems. The good news is that I got a working machine &hellip; <a href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n<div class=\"sharedaddy sd-sharing-enabled\"><div class=\"robots-nocontent sd-block sd-social sd-social-text sd-sharing\"><h3 class=\"sd-title\">Share this:<\/h3><div class=\"sd-content\"><ul><li class=\"share-twitter\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"sharing-twitter-66\" class=\"share-twitter sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=twitter\" target=\"_blank\" title=\"Click to share on Twitter\"><span>Twitter<\/span><\/a><\/li><li class=\"share-facebook\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"sharing-facebook-66\" class=\"share-facebook sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=facebook\" target=\"_blank\" title=\"Click to share on Facebook\"><span>Facebook<\/span><\/a><\/li><li class=\"share-email\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-email sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=email\" target=\"_blank\" title=\"Click to email this to a friend\"><span>Email<\/span><\/a><\/li><li><a href=\"#\" class=\"sharing-anchor sd-button share-more\"><span>More<\/span><\/a><\/li><li class=\"share-end\"><\/li><\/ul><div class=\"sharing-hidden\"><div class=\"inner\" style=\"display: none;\"><ul><li class=\"share-tumblr\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-tumblr sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=tumblr\" target=\"_blank\" title=\"Click to share on Tumblr\"><span>Tumblr<\/span><\/a><\/li><li class=\"share-pinterest\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"sharing-pinterest-66\" class=\"share-pinterest sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=pinterest\" target=\"_blank\" title=\"Click to share on Pinterest\"><span>Pinterest<\/span><\/a><\/li><li class=\"share-end\"><\/li><li class=\"share-linkedin\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"sharing-linkedin-66\" class=\"share-linkedin sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=linkedin\" target=\"_blank\" title=\"Click to share on LinkedIn\"><span>LinkedIn<\/span><\/a><\/li><li class=\"share-reddit\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-reddit sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=reddit\" target=\"_blank\" title=\"Click to share on Reddit\"><span>Reddit<\/span><\/a><\/li><li class=\"share-end\"><\/li><li class=\"share-pocket\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-pocket sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/?share=pocket\" target=\"_blank\" title=\"Click to share on Pocket\"><span>Pocket<\/span><\/a><\/li><li class=\"share-print\"><a rel=\"nofollow noopener noreferrer\" data-shared=\"\" class=\"share-print sd-button no-icon\" href=\"https:\/\/amberspyglass.co.uk\/blog\/2012\/10\/15\/clean-room-build\/\" target=\"_blank\" title=\"Click to print\"><span>Print<\/span><\/a><\/li><li class=\"share-end\"><\/li><li class=\"share-end\"><\/li><\/ul><\/div><\/div><\/div><\/div><\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[3],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p3ebGx-14","jetpack_likes_enabled":false,"_links":{"self":[{"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/posts\/66"}],"collection":[{"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=66"}],"version-history":[{"count":2,"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/posts\/66\/revisions"}],"predecessor-version":[{"id":68,"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/posts\/66\/revisions\/68"}],"wp:attachment":[{"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=66"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=66"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/amberspyglass.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=66"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}