{"data":{"make":{"id":"1022565","created":"2023-08-04T03:53:15.279449+00:00","edited":null,"deleted":null,"isMake":true,"printer":{"id":"1","name":"Prusa MK3/S/S+","__typename":"PrinterTypeType"},"parent":null,"author":{"id":"59001","handle":"Jan_59001","verified":false,"dateVerified":null,"publicUsername":"Jan","avatarFilePath":"","badgesProfileLevel":{"profileLevel":15,"__typename":"BadgesProfileLevelType"},"__typename":"UserType"},"images":[{"id":"873394","filePath":"media/comment_images/63/af15fc-edd1-4635-ba6a-a08b1f355f4f/img_20230802_145712530.jpg","rotation":0,"__typename":"CommentImageType"},{"id":"873393","filePath":"media/comment_images/c6/267733-a613-445a-ab45-8eba6ad252c7/img_20230802_145750039.jpg","rotation":0,"__typename":"CommentImageType"}],"mentions":[],"text":"","rating":null,"likesCount":0,"liked":null,"membershipAgeMonths":null,"membershipTier":null,"__typename":"PrintCommentType","model":{"id":"37164","slug":"bolt-nut-with-secret-compartment","name":"Bolt & Nut - with Secret Compartment!","authorship":"author","club":false,"excludeCommercialUsage":false,"price":null,"eduProject":null,"ratingAvg":"4.8000000000","myRating":null,"ratingCount":5,"description":"

Shhh - don't tell anyone! This bolt has a hidden compartment for hiding your super-secret spy plans; the bolt head un-screws to reveal a hollow bolt.

This was just a fun project to try out some ideas, and give me an excuse to work on my 3D CAD skills. It turned out to be a bit trickier than I expected to get all the part to fit the way I wanted, but it was a good learning experience.

The OnShape 3D CAD files for this are available here:

https://cad.onshape.com/documents/74f66e195470b7a7ae955ba9/w/94547416ab094c112c198107/e/068b816b36e0b9a9fb7c43b3

Print instructions

Print in PLA using the provided 3mf files; otherwise:

Print the threaded part open end up:

use brim
perimeters = 4
infill = 10% rectilinear

Print the nut:

no brim
perimeters = 3
infill = 10% rectilinear
top/bottom fill pattern = concentric

Print the bolt head open end up:

no brim
perimeters = 3
infill = 10% rectilinear
top/bottom fill pattern = concentric

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Bolt & Nut - with Secret Compartment!

Bolt & Nut - with Secret Compartment!

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