Fully parametric cap for squeeze or pour bottles

prusaprinters

<p>I made these for 250ml and 125ml soft (HDPE or PETE) liquid bottles. The ones for e-liquid normally come with a twist-top cap that has a lot of backflow and leaks all over the place. Their tip is also extremely wide and I wanted something thinner.</p> <p>This fixes both issues and after modeling it in OpenSCAD I made it fully parametric. You can adjust:</p> <ul> <li>Cap internal diameter (Cd)</li> <li>Cap internal height (depth) (Ch)</li> <li>Cap wall thickness (Ct)</li> <li>Spout major diameter (Sd)</li> <li>Spout minor diameter (Sm)</li> <li>Spout height (Sh)</li> <li>Spout thickness at base (St)</li> <li>Spout thickness at top (Sp)</li> <li>Height of thread start (Ti)</li> <li>Thread turns (Tt)</li> <li>Thread pitch (Tp)</li> <li>Thread height, the difference between Dmaj and Dmin (Th)</li> <li><p>Thread thickness (width of ridge) (Tw)<br/> <strong>IMPORTANT</strong>: If you are using these for anything that goes inside your body, use food safe filaments and common sense.</p> <h3>To-do</h3> <p>I can't get the ends of the threads to end smoothly. If you are an OpenSCAD guru, please have a look at the code. I'd appreciate the opportunity to learn a new trick or two.</p> </li> </ul> <h3>Print instructions</h3><p><strong>Rafts:</strong> No<br/> <strong>Supports:</strong> Yes<br/> <strong>Resolution:</strong> 0.2mm</p> <p><strong>Notes:</strong></p> <ul> <li>Use supports for the center threaded portion, to support the top; but you can increase the support distance in XY so that the plug comes out better.</li> <li>For some reason Slic3rPE feels the need to extend the supports all the way inside the spout; if this happens to you just add a support blocker for that portion.</li> </ul>