SummaryImproved Backing Plate for mounting the Removable Lulzbot Spool Arm on the Lulzbot Mini 3D Printer Requires four M3x20 Machine Screws and 4 M3 Nuts. Spool Arm Bracket (http://www.thingiverse.com/thing:756173) which holds the Removable Spool Arm( http://www.thingiverse.com/thing:766330) or The IMPROVED FOLDING REMOVABLE Spool Arm (http://www.thingiverse.com/thing:1250529) These parts were created to make a removable spool arm for the Mini, and also to clean up the profile on the right side of the machine, in order to allow us to enclose the printer with laser cut Acrylic panels (http://www.thingiverse.com/thing:756211) If you are interested in an entire add-on kit to enclose your Lulzbot Mini, We've put together a kit that includes hinges, latch, and laser cut acrylic panels. You can check it out at: http://drazzticaction.com/products-page-2/3dprinters/ or Blue skies, Jim Rasmussen TabSynth Design Works LLCInstructions3D printed on the Mini, along with the bracket (http://www.thingiverse.com/thing:756064) and the IMPROVED FOLDING REMOVABLE Spool Arm (http://www.thingiverse.com/thing:1250529) if necessary. Bolts onto the frame with four 20mm M3 machine screws, and four M3 nuts. If you are interested in enclosing your Lulzbot Mini, but don't want to print the parts and laser cut the panels, I've put together a kit of all the components. Contact me if you're interested Jim Rasmussen TabSynth Design Works LLC