EIBOS Cyclopes Extension Walls and Bearing Risers

prusaprinters

<p>The EIBOS Cyclopes is about as good a filament dryer as you can get these days, but it does have a major flaw - the filament rolls are too close to the heat source and they will scorch. &nbsp;Some people, including myself, have attempted to solve this problem with a heat deflector plate. &nbsp;That works somewhat but it seems to cause back pressure and overheating of the sides and bottom of the unit &nbsp;</p><p>I have a better solution. &nbsp;I created a set of bearing extender walls and center risers which elevate the spool holders and bearings while still preserving the original parts and functionality. &nbsp;Measurements with a temp probe show the temperature under the filament spools is close to what it should be.</p><p>To give credit where credit is due, I found a set of excellently designed extension walls created by MMartinJ on Thingiverse: &nbsp;<a href="https://www.thingiverse.com/thing:4962034.">https://www.thingiverse.com/thing:4962034.</a> &nbsp;Using his dimensions and overall shape as a template, I created new walls with bearing holder blocks and locator feet, and I also created a center bearing extender piece.</p><p><strong>Print Settings</strong></p><p>I used PETG and it's holding up fine. &nbsp;You could use ABS or ASA if you are concerned about &nbsp;heat warping.</p><p>Walls: &nbsp;PETG, 30% infill, 0.2mm layer height, no supports. &nbsp;I used the auto variable layer height to get a smoother radius on the bearing blocks. &nbsp;It is possible to print both walls on the bed. &nbsp;See photos.</p><p>Center bearing assy: &nbsp;PETG, 30% infill, 0.1mm layer height - important or it will not fit properly. &nbsp;Print flat side down either side. &nbsp;Use ‘supports everywhere’ setting. &nbsp;The supports are &nbsp;small and minimal and they will ensure crisp flats which are critical to get proper fit. &nbsp;See photos.</p><p><strong>Assembly Tips</strong></p><p>Visually check all parts for clean bearing slots by popping one of your bearings in and out a few times. &nbsp;Should be a light press fit, no slop, but not too tight either. &nbsp;If too tight, make sure you are pressing the bearing in squarely and press the bearing in a few more times and it will loosen. &nbsp;Check for supports flash leftovers and cut or file away if needed. &nbsp;Also check the bottom flats of the center bearing assy, it should be clean.</p><p>The walls were designed to locate using feet and should have no slop. &nbsp;They should sit flat on the bottom and the side joints should be even. &nbsp;If they don't, a few light strokes with a file or sandpaper on the angled sides of each locator foot will provide a little more clearance. &nbsp;Maintain the angle of the feet!</p><p>I found that the temperature is most accurately maintained by raising the temp sensor a little bit. &nbsp;Just pull it out and bend it back a little as shown in the photos.</p>