Captive Polarizing Filter Frame and Case

prusaprinters

<p>Small kit of filters to play with lasers, polarized light, photoelasticity, and diffraction gratings.</p> <p>The filter frame holds a captive 80x80mm bare polarizing filter, which makes it easier to handle without smudging or scratching it. The filter is taped onto the print midway through using a preprogrammed pause at the right layer, and when the print resumes it builds over the filter by a few mm, trapping it in place.</p> <p>The box holds 2 of these filters + 2 diffraction gratings, and has slots to position the filters for some common experiments involving polarized light and lasers. The photos show using 2 filters to view stresses in clear plastic, demonstrating the polarization of a red laser pointer, using the same optically active plastic to pass a laser through 2 opposing polarizing filters, and showing how a diffraction grating splits different wavelengths of light at different angles. You can use the last behavior to measure the wavelength of your laser pointers!</p> <p>The lid slides on snugly with a .2mm clearance to the rest of the box to keep everything protected.</p> <p>The filters cost about $12 for everything, I bought the <a href="https://www.ebay.com/itm/POLARIZING-FILTER-SHEETS-SET-OF-TWO-AND-VERY-AFFORDABLE-WHY-PAY-MORE/193436491884/">80mm polarizing filters</a> and <a href="https://www.ebay.com/itm/2x-Double-Axis-Diffraction-Grating-Slide-13-500-lines-inch-Holographic-US-Seller/292485052319/">diffraction gratings</a> from ebay, and they're usually easy to find elsewhere.</p> <p>Fusion 360 (.f3d) and step files are included alongside the STLs for ease of modification.</p> <h3> Print Settings</h3> <p><strong>Printer Brand:</strong></p> <p>Prusa</p> <p><p class="detail-setting printer"><strong>Printer: </strong> <div><p>I3 MK3S</p></div><strong>Rafts:</strong></p> <p>No</p> <p><p class="detail-setting supports"><strong>Supports: </strong> <div><p>No</p></div><strong>Resolution:</strong></p> <p>0.2</p> <p><p class="detail-setting infill"><strong>Infill: </strong> <div><p>25%</p></div><br/> <strong>Filament:</strong><br/> Generic PLA White</p> </p></p></p> Category: Physics &amp; Astronomy