Lack Enclosure Glass Mod (50cm x 4mm) (WIP)

prusaprinters

<h3>Design decisions</h3><p>Apparently 3mm sheet width is not widely available in our local facilities.<br>Therefore I wanted to get to know Fusion 360 and "fix" this issue for an updated Lack enclosure.<br>You get one cut per sheet for free for transport reasons. So I ended up with the following dimensions.</p><h5><br>Material changes (28.07.2021)</h5><p><br>1. 3x 44cmx50cmx4mm&nbsp;<br>2. 2x 22cmx50cmx4mm</p><h5>Model changes (28.07.2021)</h5><ul><li>Retracted all slots on the lower part by 1mm to the inside to fit the 4mm plexiglass sheets.</li><li>&nbsp;Retracted the inner Plexiglas notches on the upper unit by 1mm.</li><li>Retracted the adjustment arm 3mm into the case, making room for the plexiglas sheet.</li><li>Retracted the left connector and its dependants inside.</li><li>Retracted the right frame 6 mm into the case.</li><li>Retracted the back frame 3mm into the case, rounding the top of the slanted edge.</li><li>Reduced the front panel magnet distance by 0.5mm.</li><li>Reduced the front panel magnet slot width by 0.25mm<br><strong>Results in a closer magnet vicinity</strong><br>NOTE: The retraction results in the magnet slots to be open at the edge of the hinges.<br>This should not be an issue if you fixate the magnets.<br>The magnets will have an approximate distance of 3-4 extrusion widths (0.4), still.<br>&nbsp;</li></ul><h5>Issues I noticed with this design (24.09.2021):</h5><p>Design may already have been flawed in the original version.</p><ul><li>The rounded corners on the back panel may occasionally break, as it seems to be a tight fit. This might be fixed with a closer inspection of the&nbsp;</li><li>The rounded corners also tend to have a steep overhang, causing a bad layer adhesion on the bottom / later top. This can look a bit ugly and may result in interference with the desk plate hinges.</li><li>The desk plate hinge is badly accessible to screw in the necessary M3s. This may be fixed with a receding Screw plate.</li><li>The glass panels don't sit very tight inside the feet. There should be pre-made holes to support an M3/M4-Screw, to hold the panels in place.</li><li>The desk plate fixture arm had no print support. Support should be generated where necessary.</li><li>The fixture arm doesn't fully recede into the hole, which may cause a little pressure on the arm. The left back side hole therefore should recede a bit further.</li><li>The heads of the M3-Screws holding together the top frame may not fully recede into the holes, leaving a gap between frame and desk plate.</li><li>If the casing should also be used as a removable, there is lacking rigidity and lifting grip.</li></ul>