clamping Knob

thingiverse

<h3>What It Is and What Should Never Be</h3> <p>Yes, I'm sorry about that terrible Led Zeppelin pun, anyway... Above or below you'll see my design for 3D printed knobs (or clamping screws). They come in two sizes: M6 and M8.</p> <p>They're designed to be used with an all-thread (or screw) locked against rotation. The knobs are designed so that they can fit around 20mm of thread inside them. The whole thing requires extra nuts, which are pulled into the parts after printing (I've designed them to have a very slight press fit). After the screws are inserted, you can press on the cap, which will hold the nut in place and make the thing look nice.</p> <p>I've designed the caps to be slightly press-fit too (use a bench vice - it works out really well for me).</p> <p>Also, I've designed two versions of caps (or plugs, as they're called in the file names):</p> <ul> <li>Normal version</li> <li>Easy print version</li> </ul> <p>The normal version has an upper top that follows the curve of the button. It looks quiet good but is difficult to print because there's no major flat surface to use as a bottom (actually, it's terrible and not worth the trouble for most applications).</p> <p>The easy version has a flat upper top, making it way easier to print. And it doesn't look that bad either.</p> <h2>Measurements</h2> <ul> <li>Height: ~29mm</li> <li>Diameter: ~50mm</li> <li>Max length of thread inside*: 26.5mm</li> <li>Min length of thread inside**: ~10.5mm</li> </ul> (*) Max length of thread before it pushes against the plug. (**) Min length of thread needed to fully bind with the hex nut (M6). Nine millimeters would work for light clamping forces, too, I guess.