There are a few purge volume test prints available, but I wanted something quick and simple, so I came up with these two models…
It's a simple ring with an indentation, you set the main color for the ring, then paint the indentation with smart fill with the color you want to test it and then adjust the purging volumes in slicer (see screenshot), or just verify if the default values are already ok.
With the indentation you can clearly see any possible color bleeding, additionally the single color portions on bottom and top help to find any impurities in the section with the color change.
You can also check the purge lines in the purge tower and see how clean the extrusion already became with the set purge volume and if you can reduce or need to increase it.
With some filaments like Blends or Matt filaments you really have to crank up the purge volume (one example in the pictures is White to Viva la Bronze and with 480mm³ it still wasn't 100% clean again).
Other purge volume test don't cover that big amounts, here only the end of your spool is the limit ;-)
Also if you see your purge volume is going into crazy numbers you always can evaluate if it's worth using this filament or better use another color or another filament, before starting any big and long multicolor print.
I made two versions, both set up for 0.2mm layer height:
Import the 3mf as project and you have everything set up, just change colors and purge volumes to your needs.
Used settings:
0.2 IS Structural
2 bottom, 3 top layers
rest default
The author marked this model as their own original creation.