<p>Can you convert a 3D printer to a laser engraver?</p>
<p>If so is there a specific thing I have to buy?</p>

[{'answer_id': 18290, 'author': 'Trish', 'author_id': 8884, 'author_profile': 'https://3dprinting.stackexchange.com/users/8884', 'pm_score': 4, 'selected': True, 'text': '<p>Yes, one can convert a 3D printer into a Laser Engraver, and it isn\'t even all that problematic.</p>\n<ul>\n<li>You\'d need to acquire a laser diode. These are usually not available with a lot of power - certainly not the hundreds of Watts that come from a proper CO2 laser - but depending on your printer, it might be pretty much a bolt-on addon.\n<ul>\n<li>The conversion isn\'t <em>too</em> invasive, and takes much less time than building a printer from a set. <a href="https://all3dp.com/2/ender-3-laser-engraver-upgrade-all-you-need-to-know/" rel="noreferrer">All3D</a> converted an Ender-3 to have a laser within less than an hour. In their step-by-step guide, they wired it into the 5V part cooling fan port of their printer. Whatever laser diode you choose, the setup will be similar, as long as your diode works with 5 Volt power.</li>\n</ul>\n</li>\n<li>Once installed on the physical side, you will need to prepare your prints with a different &quot;Slicer&quot; that uses the commands for the fan speed as powers for the laser:\n<ul>\n<li><a href="https://marlinfw.org/docs/gcode/M107.html" rel="noreferrer"><code>M106 S</code></a> sets the power to S, where S is a number from 0 to 255 ; Without an S value, it turns on to the last setting (if turned off via <code>M107</code>)</li>\n<li><a href="https://marlinfw.org/docs/gcode/M107.html" rel="noreferrer"><code>M107</code></a> turns off the laser.</li>\n</ul>\n</li>\n</ul>\n<p>One such slicer would be <a href="https://forums.creality3dofficial.com/download/software/" rel="noreferrer">Creality Workshop</a>, which would work with any Marlin-run printer, as long as you use the fan as the diode\'s power source.</p>\n'}, {'answer_id': 18292, 'author': 'Greenonline', 'author_id': 4762, 'author_profile': 'https://3dprinting.stackexchange.com/users/4762', 'pm_score': 3, 'selected': False, 'text': '<p>Probably a laser... and a mount for the laser. Then connect its power supply to be switched by the extruder supply/signal. Also, there would be no need for any Z-axis movement, beyond setting the correct height of the laser device.</p>\n<p>However, unless you are handy with DIY, messing about with microcontrollers and electronics, modifying firmware and have experience in making your own 3D printer, then it is probably easier to just buy a ready built engraver.</p>\n<hr />\n<p>That said, and after reading Trish\'s (more technically detailed and accurate) answer, it probably isn\'t all that daunting to accomplish. In addition, if you <em>already</em> have a printer, then a modification would be cheaper than buying a whole new unit.</p>\n<p>Here is a handy video tutorial, which shows how easy it, in fact, is: <a href="https://www.youtube.com/watch?v=hEk3aVARSGc" rel="nofollow noreferrer">3D printer to laser engraver for under $60</a></p>\n<p><div class="youtube-embed"><div>\r\n                <iframe width="640px" height="395px" src="https://www.youtube.com/embed/hEk3aVARSGc?start=0"></iframe>\r\n            </div></div></p>\n<blockquote>\n<p>This unit was tested on the Creality Ender 5, but the plug should work for any Creality printer like the Ender 3 and CR-10</p>\n</blockquote>\n<p>This modification also uses the <em>part cooling fan</em> to control the laser and there is no need to remove the extruder - the laser attaches itself by the use of magnets to the extruder. So you can have a <em>dual-purpose printer</em> without that much fuss at all.</p>\n<p>The website used to generate the G-code is <a href="http://nebarnix.com/img2gco/" rel="nofollow noreferrer">http://nebarnix.com/img2gco/</a>, and it takes a simple image file as input. The settings recommended by the video are as follows:</p>\n<blockquote>\n<p><a href="https://i.stack.imgur.com/D72Iz.png" rel="nofollow noreferrer" title="Generating the G-code for the laser"><img src="https://i.stack.imgur.com/D72Iz.png" alt="Generating the G-code for the laser" title="Generating the G-code for the laser" /></a></p>\n</blockquote>\n<p>Note: As pointed out in the video, the minimum power should <strong>not</strong> be zero as this turns off the laser, thereby incurring a delay upon restart. Setting the power to a sufficiently low level - so as not to burn - is preferable, i.e. 10.</p>\n'}]
['https://3dprinting.stackexchange.com/questions/18289', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/31762/']