{"id":1117488,"date":"2026-06-15T13:00:04","date_gmt":"2026-06-15T20:00:04","guid":{"rendered":"https:\/\/hackaday.com\/?p=1117488"},"modified":"2026-06-15T10:02:38","modified_gmt":"2026-06-15T17:02:38","slug":"ergonomic-mouse-gives-each-fingertip-its-own-saddle","status":"publish","type":"post","link":"https:\/\/hackaday.com\/2026\/06\/15\/ergonomic-mouse-gives-each-fingertip-its-own-saddle\/","title":{"rendered":"Ergonomic Mouse Gives Each Fingertip Its Own Saddle"},"content":{"rendered":"<p>Want to make your own ergonomic mouse but don&#8217;t know where to start? Why not try [psudoku]&#8217;s <a href=\"https:\/\/github.com\/pseudoku\/Kotinos\" target=\"_blank\">Kotinos<\/a> design?<\/p>\n<p><a href=\"https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-preview-thumb.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1117510\" data-permalink=\"https:\/\/hackaday.com\/2026\/06\/15\/ergonomic-mouse-gives-each-fingertip-its-own-saddle\/kotinos-preview-thumb\/\" data-orig-file=\"https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-preview-thumb.png\" data-orig-size=\"1096,1096\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"Kotinos preview-thumb\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-preview-thumb.png?w=625\" class=\"alignright wp-image-1117510\" src=\"https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-preview-thumb.png?w=250\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-preview-thumb.png 1096w, https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-preview-thumb.png?resize=250,250 250w, https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-preview-thumb.png?resize=400,400 400w, https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-preview-thumb.png?resize=625,625 625w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>It&#8217;s a scaffold-like fingertip shell that uses the internals of an HSK Pro mouse. Each fingertip gets its own little saddle-shaped nook, and things like hand size and paddle surface can all be configured by modifying the <a href=\"https:\/\/openscad.org\/\" target=\"_blank\">OpenSCAD<\/a> scripts.<\/p>\n<p>[psudoku]&#8217;s unit looks to us as though it was maybe made using multi-jet fusion (MJF) 3D printing, but it should be perfectly printable on hobbyist printers, whether resin- or filament-based.<\/p>\n<p>Comfort of the contact surfaces is left up to the end user, but if your print lacks smoothness and sanding isn&#8217;t your jam, you might consider a layer of fabric tape to create a velvet-like surface on a 3D print. That&#8217;s a trick we&#8217;ve kept in mind ever since seeing it put to good use, cushioning the hardware in a <a href=\"https:\/\/hackaday.com\/2025\/01\/12\/custom-case-turns-steam-deck-into-portable-workstation\/\">DIY steam deck case<\/a>.<\/p>\n<p>Is the minimalist scaffold approach to a mouse not your style, or does your hand crave something less lightweight but a little more personalized? You might want to craft a <em>truly<\/em> custom-fitted mouse, for which <a href=\"https:\/\/hackaday.com\/2024\/03\/10\/custom-mouse-making-clay-is-the-way\/\">clay is the way<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Want to make your own ergonomic mouse but don&#8217;t know where to start? Why not try [psudoku]&#8217;s Kotinos design? It&#8217;s a scaffold-like fingertip shell that uses the internals of an <a href=\"https:\/\/hackaday.com\/2026\/06\/15\/ergonomic-mouse-gives-each-fingertip-its-own-saddle\/\" class=\"read-more\">&hellip;read more<\/a><\/p>\n","protected":false},"author":104030207,"featured_media":1117506,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[10969081],"tags":[21377164,422599772],"class_list":["post-1117488","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-peripherals-hacks","tag-3d-printed","tag-custom-mouse"],"jetpack_featured_media_url":"https:\/\/hackaday.com\/wp-content\/uploads\/2026\/06\/Kotinos-banner.png","jetpack_shortlink":"https:\/\/wp.me\/paBn4l-4GI0","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/posts\/1117488","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/users\/104030207"}],"replies":[{"embeddable":true,"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/comments?post=1117488"}],"version-history":[{"count":9,"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/posts\/1117488\/revisions"}],"predecessor-version":[{"id":1117714,"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/posts\/1117488\/revisions\/1117714"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/media\/1117506"}],"wp:attachment":[{"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/media?parent=1117488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/categories?post=1117488"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hackaday.com\/wp-json\/wp\/v2\/tags?post=1117488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}