Bolt & Nut - with Secret Compartment!

prusaprinters

<p>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.</p> <p>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.</p> <p>The OnShape 3D CAD files for this are available here:</p> <p><a href="https://cad.onshape.com/documents/74f66e195470b7a7ae955ba9/w/94547416ab094c112c198107/e/068b816b36e0b9a9fb7c43b3">https://cad.onshape.com/documents/74f66e195470b7a7ae955ba9/w/94547416ab094c112c198107/e/068b816b36e0b9a9fb7c43b3</a></p> <h3>Print instructions</h3><p>Print in PLA using the provided 3mf files; otherwise:</p> <p>Print the threaded part open end up:</p> <ul> <li>use brim</li> <li>perimeters = 4</li> <li>infill = 10% rectilinear</li> </ul> <p>Print the nut:</p> <ul> <li>no brim</li> <li>perimeters = 3</li> <li>infill = 10% rectilinear</li> <li>top/bottom fill pattern = concentric</li> </ul> <p>Print the bolt head open end up:</p> <ul> <li>no brim</li> <li>perimeters = 3</li> <li>infill = 10% rectilinear</li> <li>top/bottom fill pattern = concentric</li> </ul>