Great Panda Mini Core XY 3D Printer

Modified version of Rolohaun's design as I liked the low cost design of a small printer compared to a Voron but found some parts structurely weak or hard to source when assembling

Modified design of original to increase structural rigidity of some parts and reduce changes of parts snapping under load.  Also updated design as some parts were becoming hard to obtain. No additional parts required aside from 4x M5 heat set inserts and microswitch (optional), although some parts have been changed for alternatives. Full list of changes:

• Modified hotend layout now uses ProtoXtruder2.0 full 140x140mm to allow for full 140x140mm build volume to be used. Hotend may be further modified at a later date to make more lightweight
• Bearing mounting points in Y carraiges have been alterted to allow for M5 heat set inserts to be fitted to reduce the chance of mounting points snapping
• Raised height of gantry to increase build volume
• Modified fan blower positions to account for raised gantry
• Improved blower ducts to aid print quality (air flow may be slightly decreased although likely to be negligable so original ducts should also work)
• PSU changed to a slim form factor 200W unit to be mounted length ways at the front of the printer
• Control electrics moved to printer underside. Mounting points changed to SKR Pico with additional mounting for Pi Zero 2W
• Additional rear facia plate added
• Rear side panels altered to add a spool holder and filament run out switch
• Strengthened rear bed mountings to reduce change of cracking when installing the z axis. Added threads to the sprung rear V-pulley mounting to reduce cracking when installing threads
• Moved C14 power socket and added rear cover to cover exposed mains electrics
• Split front pulley bearing mounts in half to ease gantry install.
• Included drill guides for drilling bed mounting holes into 150x150mm aluminium plate as 150x150 3d printer beds are becoming hard to source
• Added slope to top panels for “aesthetics” and moved some bolt holes for the perspex center panel. Center panel is now mounted by drilling holes in perspex