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Plotter Pen Adapter for use with OpenJSCAD
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| // title : Plotter Pen Adapter | |
| // author : Brian Boucheron <[email protected]> | |
| // license : MIT License | |
| // revision : 0.002 | |
| // date : February 9, 2016 | |
| // file : plotter-pen-adapter.jscad | |
| // gist : https://gist.github.com/beardicus/d668c0f6b96be53d16dc | |
| // A parametric version of the plotter pen adapter found here: | |
| // https://www.thingiverse.com/thing:229982 | |
| // | |
| // This is designed to be loaded into OpenJSCAD by visiting the following URL: | |
| // http://openjscad.org/#https://gist.github.com/beardicus/d668c0f6b96be53d16dc/raw/plotter-pen-adapter.jscad | |
| // | |
| // The default parameters (in mm) are based on the Sharpie Fine Point pen, | |
| // but can be tweaked for your particular pen, and are explained below. Enjoy, | |
| // and get in touch with @bertmb and #plottertwitter | |
| // | |
| // Inner Diameter: this should be your pen's diameter, plus a little wiggle. | |
| // You'll have to experiment for a good friction fit | |
| // | |
| // Outer Diameter: measured diameter of a real plotter pen is actually 11.5mm | |
| // I bumped it for a thicker printable wall. There's probably some wiggle room. | |
| // | |
| // Barrel Length: how long of a barrel or "sleeve" do you want? | |
| // | |
| // Ring Height: height to bottom of the retaining ring (NOT midline) | |
| // import giblets | |
| const { cylinder, polygon } = require('@jscad/modeling').primitives | |
| const { difference, union } = require('@jscad/modeling').booleans | |
| const { rotateExtrude } = require('@jscad/modeling').extrusions | |
| const { rotate } = require('@jscad/modeling').transforms | |
| // build a profile for the retaining ring | |
| ring_thickness = 2; // thickest point of the ring | |
| ring_edge_thickness = 0.6; // thickness at the very edge of the ring | |
| ring_diameter = 16.5; // diameter of the ring | |
| ring_edge_diameter = 15; // diameter where ring starts to bevel | |
| profile = [ | |
| [1, 0], | |
| [ring_edge_diameter / 2, 0], | |
| [ring_diameter / 2, (ring_thickness - ring_edge_thickness) / 2], | |
| [ring_diameter / 2, ring_thickness - ((ring_thickness - ring_edge_thickness) / 2)], | |
| [ring_edge_diameter / 2, ring_thickness], | |
| [1, ring_thickness], | |
| ]; | |
| // get parameters | |
| const getParameterDefinitions = () => { | |
| return [{ | |
| name: 'penDiameter', | |
| type: 'float', | |
| initial: 10.8, | |
| caption: "Inner Diamter" | |
| }, { | |
| name: 'adapterDiamter', | |
| type: 'float', | |
| initial: 11.6, | |
| caption: "Outer Diameter" | |
| }, { | |
| name: 'barrelLength', | |
| type: 'float', | |
| initial: 20.7, | |
| caption: "Barrel Length" | |
| }, { | |
| name: 'ringHeight', | |
| type: 'float', | |
| initial: 11, | |
| caption: "Ring Height" | |
| }]; | |
| } | |
| // FIRE THE SPATIAL GEOMETRON | |
| const main = (params) => { | |
| return difference( | |
| union( | |
| rotate_extrude({fn: 50}, polygon({points: profile})).translate([0, 0, params.ringHeight]), | |
| cylinder({r: params.adapterDiamter / 2, h: params.barrelLength, fn: 50}) | |
| ), | |
| cylinder({r: params.penDiameter / 2, h: 50, fn: 50}) | |
| ); | |
| } | |
| module.exports = { main } | |
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