Hepa filter for 3M masks

prusaprinters

<p>I designed this case to use existing HEPA filters made for vacuum cleaners.<br/> It is compatible with 3M respirators.<br/> The main filter is located under the ventilation grill, under the first filter there's a second filter made from vacuum cleaner HEPA bags.<br/> The second filter is cut to so that it covers the area of the bottom surface of the case.<br/> There are six supports that hold the second filter against the first one, and allow the correct airflow.<br/> The top case covers completely the bottom case sides.</p> <p>DISCLAIMER: This filter has not been tested properly and it is not certified.<br/> The vacuum filters that where used had no certification, they where just sold as generic HEPA filters.<br/> This filter is to be used when no other options are available.</p> <h3>Print instructions</h3><p>Unassociated tags: #HackThePandemic</p> <h3>Category: 3D Printing Summary</h3> <p>I designed this case to use existing HEPA filters made for vacuum cleaners.<br/> It is compatible with 3M respirators.<br/> The main filter is located under the ventilation grill, under the first filter there's a second filter made from vacuum cleaner HEPA bags.<br/> The second filter is cut to so that it covers the area of the bottom surface of the case.<br/> There are six supports that hold the second filter against the first one, and allow the correct airflow.<br/> The top case covers completely the bottom case sides.</p> <p>DISCLAIMER: This filter has not been tested properly and it is not certified.<br/> The vacuum filters that where used had no certification, they where just sold as generic HEPA filters.<br/> This filter is to be used when no other options are available.</p> <h3> Print Settings</h3> <p><strong>Printer Brand:</strong></p> <p>Anycubic</p> <p><p class="detail-setting printer"><strong>Printer: </strong> <div><p>Kossel</p>&lt;/div&gt;<strong>Rafts:</strong></div></p> <p>No</p> <p><p class="detail-setting supports"><strong>Supports: </strong> <div><p>Yes</p>&lt;/div&gt;<strong>Resolution:</strong></div></p> <p>0.1</p> <p><p class="detail-setting infill"><strong>Infill: </strong> <div><p>50%</p>&lt;/div&gt;<br/> <strong>Filament:</strong><br/> [</div></p> <h3> ERYONE PETG ](http://www.amazon.com/s?url=search-alias&amp;field-keywords=ERYONE+PETG&amp;tag=tv-auto-20) Transparent <br/> <p class="detail-setting notes"><strong>Notes: </strong> </p><div><p>I used PETG since it doesn't absorb humidity as PLA does.</p></div> Post-Printing</h3> <p><strong>Finishing and stroring process</strong></p> <p><div><p>The parts where sanded with sand paper, cleaned from the dust, sterilized with a chlorine solution and at last washed with sterile water to remove chlorine residues.<br/> The last step is to assemble the filters and vacuum seal them in a sterile plastic bag.</p></div></p></p></p></p>