{"product_id":"1-4-strut-unistrut-channel-nut-v1","title":"1\/4\" Strut \/ Unistrut Channel Nut (v1)","description":"\u003cp\u003eEDIT: There is a newer version of this model here\u003cbr\u003e\u003cbr\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/en\/models\/2174555-1-4-struct-channel-nut-v2\"\u003ehttps:\/\/makerworld.com\/en\/models\/2174555-1-4-struct-channel-nut-v2\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e \u003c\/p\u003e\u003cp\u003eThese are DIY strut channel nuts for half-height strut channel.  That is, struct channel measuring 1-5\/8\" wide x 13\/16\" tall.  This includes a spring to hold them in place.  These are made for \u003cstrong\u003e1\/4\"-20 hex nuts\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eNote: These will work with full-height channels but you won't get the benefit of the spring.  I include \u003cstrong\u003eSTEP\u003c\/strong\u003e and\u003cstrong\u003e Fusion 360\u003c\/strong\u003e files if you need to change the dimensions.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe model comes as 2 parts, which press fit together.  I broke the model into parts to get the best print orientation.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePrinting tips:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eavoid PLA, it creeps.\u003c\/li\u003e\n\u003cli\u003eFor the springs, PETG.\u003c\/li\u003e\n\u003cli\u003eFor the Body - PETG works too.  ASA\/ABS may be better.  CF filament is the best I tested.  I tested Bambu PLA-CF and stripped the threads of ¼\" bolts as they were breaking.\u003c\/li\u003e\n\u003cli\u003eUse my print file.  I did a fair amount of testing and optimized this for strength.  If you cannot:\u003cul\u003e\n\u003cli\u003eprint the body face down, print springs on the side\u003c\/li\u003e\n\u003cli\u003e1 wall loop ← yes, you read that correctly.\u003c\/li\u003e\n\u003cli\u003e100% infill.  This is a must.\u003c\/li\u003e\n\u003cli\u003eInfill: Aligned Rectilinear at 90 degree angle (lengthwise of the body)\u003c\/li\u003e\n\u003cli\u003eSlow Inner + Outer wall speed down (on Bambu printer at least)\u003c\/li\u003e\n\u003cli\u003eWall generator: Arachne\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eMy first model was pathetically weak.  Each iteration of print parameters and model changes got better:\u003c\/p\u003e\u003cfigure class=\"image image_resized\" style=\"width: 552.562px\"\u003e\u003cimg src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000001320442\/design\/d1956cb0-05c1-40e6-bb7c-bea337d7d359.webp\"\u003e\u003c\/figure\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThis is the model I posted .. number 6 … (not included above).  It is quite strong.\u003c\/p\u003e\u003cfigure class=\"image image_resized\" style=\"width: 449.961px\"\u003e\u003cimg src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000001320442\/design\/e41fda32-e4ee-4675-bf70-e912bcb08b6a.webp\"\u003e\u003c\/figure\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eIt required the most force to break and snapped the extrusion paths where the model is strongest, as opposed to delamination of intra layer bonds like the other parts:\u003c\/p\u003e\u003cfigure class=\"image image_resized\" style=\"width: 464.453px\"\u003e\u003cimg src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000001320442\/design\/faa8de43-6248-4f29-a2bf-e63e8319073d.webp\"\u003e\u003c\/figure\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThis is a view of a weaker part.  The model and slicing parameters change the strength significantly, and can be counter intuitive as well.  For example, more wall loops are weaker:\u003c\/p\u003e\u003cfigure class=\"image image_resized\" style=\"width: 458.742px\"\u003e\u003cimg src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000001320442\/design\/fd50f439-0d37-41ec-a3e7-bf4e830d400c.webp\"\u003e\u003c\/figure\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThis is what you should see from my print file.  You want the slices under the nut to look like this:\u003c\/p\u003e\u003cfigure class=\"image image_resized\" style=\"width: 454.031px\"\u003e\u003cimg src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000001320442\/design\/300219e9-2c32-44b3-a3a3-a90f4ae52333.webp\"\u003e\u003c\/figure\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMy use case:\u003c\/strong\u003e  I'm building a home server rack and I added strut channels to the back of a 2 post wall mounted rack to help manage cabling.  A 4 post rack would have been an option, but I was already committed to a 2 post.  Strut is a complete overkill, but you can buy 10' lengths for $25 and the modularity of it is amazing.  The cost of bits to bolt everything together adds up quick though.  I used commercial nuts for the structure, and use these DIY nuts to mount cable holders, which are also 3d printed.\u003c\/p\u003e\u003cfigure class=\"image image_resized\" style=\"width: 435.609px\"\u003e\u003cimg src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000001320442\/design\/31735722-25f0-43c7-b1cb-19488f698409.webp\"\u003e\u003c\/figure\u003e\u003cp\u003eDesign by glen on MakerWorld (license: BY-SA).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67449216401712,"sku":null,"price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0_6ba2b462-1c73-4f1e-bb9a-3c4bcfd41fab.png?v=1785825794","url":"https:\/\/mymadmanlab.com\/products\/1-4-strut-unistrut-channel-nut-v1","provider":"Mymadmanlab.com","version":"1.0","type":"link"}