Symbols of Kwanzaa greetings card

prusaprinters

<p>This is the first of 3 experimental greeting card prints. They demonstrate the conversion of any image into a 4 3d models comprising cyan, magenta, yellow and black (the key - referred to as k in print files). They also aim to test the limits of PrusaSlicer and a single material Mk3S with a 0.4mm nozzle in detailed printing.<br/> The conversion involves:</p> <ol> <li>Resize the image in Microsoft Paint to 9 times less resolution than is printable (e.g my current limit is 191 on a 250mm x-axis - see 3 below)</li> <li>Index the image in Gimp using a palette I have devised of 220 cmyk combinations<br/> 3 Resize the image up by 9 (x-axis limit 573 - pixel size 0.436mm)<br/> 4 Using a Script-fu I have written convert each 3x3 into 9 cmyk pixels and save as a raw image<br/> 5 Using a program I have written in Chez Scheme convert the image into 4 obj files (I believe this to be a first method of converting a 2d image to 3d model that does not use svgs)</li> <li>Scale each model in Meshmixer</li> <li>Backing and message are designed in Inkscape and Tinkercad</li> </ol> <p>I am happy to provide further details and code if you message me</p> <p>I acknowledge the copyright of the The Official Kwanzaa website and Microsoft Paint.</p> <h3>Print instructions</h3><p>None of the files will print correctly without following these instructions (which are still a work in progress)</p> <p>The following instructions assume use of generic PLA.</p> <p>Ideally you need cyan, magenta, yellow and black filament. If you use different colours - google images of Andy Warhol's Marilyn Monroe for the effect.</p> <p>Slicing:</p> <p>For all 6 files</p> <ol> <li><p>Once loaded into PrusaSlicer you may need to rotate the object 90 degrees</p> </li> <li><p>In Print settings - Skirt and brim set Loops to 0</p> </li> <li><p>For the for 4 image files ONLY in Print Settings<br/> a) In Layers and perimeters change the following: Vertical shells - Perimeters 0 and Horizontal shells - Bottom 0<br/> b) In Infill change the following: Fill, Top fill and Bottom fill Concentric, Solid infill every 1 and Bridging angle 45<br/> c) In Speed change the following: Modifiers - First layer speed 5<br/> d) In Advanced change the following: Extrusion width - First layer 0.38 and Flow - Bridge flow rate 1.05</p> </li> <li><p>For the backing and message files ONLY<br/> In Printer Settings change the following: Size and coordinates - Z offset 0.2<br/> WARNING: IF YOU ENTER A NEGATIVE NUMBER HERE YOU WILL DAMAGE YOUR PRINTER</p> </li> </ol> <p>Printing<br/> Print the 4 image files first in any order. Tune Speed to 30%<br/> then<br/> Print the backing and message. Tune Speed to 300%<br/> Removal from the bed is shown in an image</p>