{"id":2914,"date":"2024-03-23T18:20:21","date_gmt":"2024-03-23T18:20:21","guid":{"rendered":"https:\/\/davidnilles.com\/?p=2914"},"modified":"2024-03-24T20:45:30","modified_gmt":"2024-03-24T20:45:30","slug":"barbell-collars","status":"publish","type":"post","link":"https:\/\/davidnilles.com\/index.php\/2024\/03\/23\/barbell-collars\/","title":{"rendered":"Barbell Collars"},"content":{"rendered":"\n

After finalizing my P-I-P hinge<\/a> program in Grasshopper 3D, I had been looking for good projects to use it on. There never seem to be enough good barbell collars in the gym so I began wondering if I were able to prototype one.<\/p>\n\n\n\n

The design for my 3D printed barbell collar is nothing revolutionary. It is essentially the same as other cheap collars.<\/p>\n\n\n\n

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Generic Barbell Collar<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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My 3D Printed Collar<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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Latch View of Generic Collar<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

Similar to other projects of mine, I aim to capitalize on the advantages of additive manufacturing. Using the same principles as my PIP hinge design, I am able to make the whole assembly from one print; a part count of one. From a manufacturing perspective, minimizing part count is a great way to cut costs of finished goods. My design requires no assembly, just a bit of support removal. <\/p>\n\n\n\n

Getting to this first working prototype wasn’t as simple as it should have been. To start, I wanted to be sure my hinge design on the back of the collar would work. My PIP hinge generator worked very well first try.<\/p>\n\n\n\n

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From there I had to design the latching mechanism. I using the same tolerances as the hinge for my first print. I ended up with a single complex piece, an offset shaft that kind of reminds me of a crankshaft. The tolerances worked well, but I did the latch incorrectly. It didn’t open fully or easily.<\/p>\n\n\n\n

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Closed Latch<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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Open Latch<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

I put the latch clip on the short piece of the mechanism. I should have put it on the large piece for better mechanical advantage. The latch action is incorrect and will not work.<\/p>\n\n\n\n

After fixing I had a working prototype:<\/p>\n\n\n\n

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<\/p>\n","protected":false},"excerpt":{"rendered":"

After finalizing my P-I-P hinge program in Grasshopper 3D, I had been looking for good projects to use it on. There never seem to be enough good barbell collars in the gym so I began wondering if I were able to prototype one. The design for my 3D printed barbell collar is nothing revolutionary. It […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[23,10],"tags":[],"class_list":["post-2914","post","type-post","status-publish","format-standard","hentry","category-3d-printing","category-nilles-fitness"],"_links":{"self":[{"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/posts\/2914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/comments?post=2914"}],"version-history":[{"count":27,"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/posts\/2914\/revisions"}],"predecessor-version":[{"id":3409,"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/posts\/2914\/revisions\/3409"}],"wp:attachment":[{"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/media?parent=2914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/categories?post=2914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/davidnilles.com\/index.php\/wp-json\/wp\/v2\/tags?post=2914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}