This is a retraction test for large bed printers such as the Ender 5 Plus. It forces the head to move and retract across multiple objects near and far.

First Picture shows the filament worms with a 4mm retraction at the fastest retraction speed.

Second set shows the improved quality with NO filament worms with a 8.4mm retraction at the same speed. Temperature was kept the same at 198C for this filament between Test 1 and Test 2.

For users with Creality printers, please also consider this mod - https://www.thingiverse.com/thing:3203831

If you are using Cura, also turn off z-hop on the Ender 5 series printers.