{"id":65130,"key":"Sailing_cam_cleat","title":"Sailing cam cleat","latest":{"id":1092906,"timestamp":"2024-02-28T13:16:08Z"},"content_model":"wikitext","license":{"url":"https://www.appropedia.org/Appropedia:Copyrights","title":"CC-BY-SA-4.0"},"source":"[[File:OSAT Cam Cleat.jpg|thumb]]\n\n{{Device data\n| manufacturing-files = https://www.thingiverse.com/thing:1183173\n}}\n\n{{Project data\n| authors = User:Thomas Korejsza\n| made = Yes\n| replicated = No\n| cost = USD 2.55\n}}\n\n== Cam Cleat ==\n\nProject developed by [[User:Thomas Korejsza|Thomas Korejsza]] ([[User talk:Thomas Korejsza|talk]]) 16:55, 7 December 2015 (PST)\n\n== Abstract ==\n\n# This OSAT design is an economical alternative for a cam cleat. Basic cam cleat designs are utilized for many functions. They are typically used as a quick release and locking mechanism for ropes and chords. These devices are usually found on sailing vessels as a method organize and hold lines. Additionally, with few modifications of this design, one being a pulley, a mechanical ascender should be able to be printed.\n# Cam cleats typically use leaf springs to provide their action, however, this is a prototype using rubber bands. The loads for this prototype need not be large to confirm how the rest of the design responds to an action.\n# Having the option to 3D print a cam cleat at sea is attractive as it can save frustration in the event of a failure. During light to medium wind conditions, a 3D printed cam cleat should be sufficient until a replacement can be obtained.\n# Picture of completed print using [[File:OSAT Cam Cleat.jpg|200px|right]]\n\n== Bill of Materials ==\n\n# Materials needed for fabrication of device and alternative materials if they are not available, prices/sources of non-printable parts\n# Plastic - roughly 66 grams of PLA which equates to $1.52 at $22.98 pr 1Kg.\n# Rubber bands- large assortated package at $1.68\n\n *ONLY NEED TWO BANDS!\n\n# Two 3mm bolts & Two 3mm Nuts ~ $0.98\n## Link to Thingiverse with scad and stl files.\n\n [|https://www.thingiverse.com/thing:1183173]]\n\n== Tools needed ==\n\n# [[Athena Build Overview|MOST Delta RepRap]] or similar RepRap 3-D printer\n# C-clamps for setting nut into base plate.\n\n[[User:Thomas Korejsza|Thomas Korejsza]] ([[User talk:Thomas Korejsza|talk]]) 16:55, 7 December 2015 (PST)\n\n== Skills and knowledge needed ==\n\n* Novice skill with OpenScad is required for the modeling.\n* Knowledge of a cam cleat was required.\n\n== Technical Specifications and Assembly Instructions ==\n\n# Directions for assembly\n## Download the .stl and/or .scad files.\n## Print both base plate and cleats.\n## Insert nuts into bottom of the base plate. C-clamps help secure them to their location.\n## Located on the base plate and cleat are pegs, use a rubber band between these two pegs to provide the spring action. (Note. you may want to double over the rubber band to create more tension.\n## Place bolt through cleat clamp and screw into nut.\n# print time estimate- 3 hours\n# Assembly time estimate 5-10 minutes\n# Including drawings or pictures of the device at stage of assembly at minimum. ([[Special:UploadWizard|Upload]])\n\n=== Common Problems and Solutions ===\n\n* A common issue with this design is that the rubber bands providing the action may slip off when relaxed. This can be solved two ways, either provide a lip for them to stay on or use an exceptionally tight rubber band.\n* Also, an improvement to this design would be a better stopping mechanism so the cam does not reverse on it self when relaxed.\n* Both issues can potentially be solved when using a leaf spring instead of rubber bands.\n\n== Cost savings ==\n\n# Total cost using sum from BOM - $2.55\n# Commercial equivalent [Harken Cam Cleat] $31.50\n# $ savings = $28.55\n# % savings = %90\n\n{{Page data\n| sdg = SDG09 Industry innovation and infrastructure\n| organizations = MTU, Michigan_Tech's_Open_Sustainability_Technology_Lab\n| license = CC-BY-SA-3.0\n| language = en\n}}"}