I use this small combination temp and stringing test to determine the best settings for each roll of PLA that I use. The temperature range used is 180 to 225 degrees C. After printing you are able to determine what the best temperature setting is for stringing, bridging, fine detail and layer adhesion. This test print is based on using a .4 nozzle, and when printing, don't forget to set your flow rate. A Cura 3.6 profile is included, as well as the gcode, step and stl files.