JGMaker Magic Improved Part Cooling Duct

This is a Slightly improved Part Cooling Duct for the JGMaker (JGAurora) Magic 3D Printer.
Basic improvements over the stock duct include:

• 3mm separation from the heater block so its doesn't melt like the original
• air flow directed better to the part below the nozzle tip instead of over to the side
• vent now centered across nozzle tip instead of mainly in the front
• can be replaced fairly easily without disassembling the print head

See 'Print Settings' below for printing suggestions.