Retraction Test Towers

I usually print this test with z=0.5 (half normal height). Makes for a quick and easy retraction test. Fiddle with retraction length and speed in your slicer. Hotend temperature will make a difference too; cooler = less stringy. My Rostock Max v3 (long Bowden tube) is just about right with 5mm retraction at 25mm/sec.

Try Googling your printer model plus "retraction settings".

Photo
Foreground - 2.5mm retract @ 25mm/sec
Midground - 3.5mm retract @ 25mm/sec
Background - 5mm retract @