<p>There are four models attached here:</p><p><b>1. Spool Mount</b></p><p>The spool mount clips onto the back of the Ultimaker 2 and allows various spindles to be quickly swapped in and out. This can be useful if you have filament spools from different sources that all expect different diameter spindles. </p><p>The spool mount is the most difficult part to print, and should be printed using supports. I found that Cura's 'grid' style supports were too difficult to remove, but had success using the 'line' style of support structure. <b>Be careful</b> when removing the supports, as it's quite easy to break the little mounting clips at the top of the part.</p><p>The good news is, you only need one good print of this part, and you're done.</p><p><b>Update</b> - I recommend printing the 'v6a' version of this part, which reinforces the main clip making it both easier to remove the supports and sturdier when installed on the printer.</p><p><b>2. 49mm Filament Spindle</b></p><p>This part can be used to mount the official UM2 filament spools. Like the original filament mount, this part is long enough to mount two spools concurrently.</p><p>Supports are recommended when printing this part. <br></p><p><b>3. 38mm Filament Spindle</b></p><p>This part can be used to mount spools that expect a 38mm spindle size, as used by some Australian retailers. It should print easily with no supports.</p><p><b>4. 31mm Filament Spindle</b></p><p>This part can be used to mount spools that expect a 31mm spindle size, as used by some low-cost Hong Kong retailers. It should print easily with no supports.</p>
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