Flat multicolor Artemis mission patch (without MMU)

Flat multicolor Artemis mission patch (without MMU)

prusaprinters

<p>This mission patch is printed flat without color changes based on layers or the use of a MMU.</p><h3>Print instructions</h3><ol><li>Use either the provided <code>.gcode</code> file or the <code>.3mf</code> file (note, you will need to remove the first tool change if you slice it your self. Look for <code>;BEGIN_TOOL_CHANGE</code> just after the <code>;intro line</code> gcode)</li><li>Thoroughly clean the printing surface (the flat PEI sheet is recommenced and cleaning with some dish soap)</li><li>Load the black filament and start printing <strong>NOTE:</strong> The print is mirrored on the build plate, the final result will be correct!</li><li>When prompted, load the gray/silver filament, make sure the color is correctly extruding before continuing: run the "Color not correct" option. (This is why the MMU is a thing ;) )</li><li>Then continue with the red, blue and finally the white (when prompted for a color change). Run the "Color not correct" option a few times, especially for the white filament.</li><li>Let it print and give it some time to cool to prevent bending the warm print while removing.</li></ol><h3>How does this work?</h3><p>TLDR; The logo is converted to an SVG vector image file and then cut-up into it's main shapes per color. Then those are rendered via OpenSCAD into 3D shapes and combined in Blender to form a single <code>.obj</code> file. Then with some clever slicer configuration the desired effect can be achieved.</p><h4>OpenSCAD instructions</h4><p>Comment out all colors except one and render it to a <code>.stl</code> file and name them something sensible (like to colors!). Directly rendering all colors, would give you just the triangle without any parts of the logo.</p><p>Then combine them in Blender (or any other 3D modelling tool) into an <code>.obj</code> file. I found this is the easiest format to work with multiple objects in a single file.</p><p>Now you are ready to slice!</p><h4>Prusa Slicer instructions</h4><p>Load your combined model into Prusa slicer and right click on it in the object tree and click then <code>Split/To Parts</code>. <strong>Note:</strong> This obviously involves the expert view of settings, so make sure it is enabled (since you are about to become an expert!)</p><p>Under <code>Printer Settings</code> change the following:</p><ol><li><code>General/Capabilities/Extruders</code> to <code>5</code></li><li><code>Custom G-code/Tool change G-Code</code> to&nbsp;</li></ol><pre><code class="language-gcode">;BEGIN_TOOL_CHANGE M600 G1 E0.4 F1500 ; prime after color change ;END_TOOL_CHANGE</code></pre><p>For each extruder change the following:</p><ol><li><code>Retraction when the tool is disabled/Length</code> to <code>0</code></li><li>Optional: change the color. Best is to start with lighter colors and then move to darker colors. Keep in mind that the last color will be the color used for the rest of the badge.</li></ol><p>Under the <code>Print Settings</code> tab change the following:</p><ol><li><code>Speed/Modifiers/First layer speed</code> to <code>8 mm/s</code> (yes, this is slow, but it does make sure that small details stick to the build plate!)</li><li><code>Multiple Extruders/Wipe tower/Enable</code> to <code>false</code> (no need for it!)</li></ol><p>Optionally, you can increase the perimeters for a nicer result on some shapes. I set it to 99 for most colors and left it at 2 for the white parts, which gave a very nice effect.</p><p>Also check out my other model using this technique: Rummikub tiles found here: <a href="https://www.printables.com/model/130082-multicolor-rummikub-tiles">https://www.printables.com/model/130082-multicolor-rummikub-tiles</a></p><p>&nbsp;</p>

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