Remembering what material was last used on a print core?

[martaaay 1]

I'm new to my Ultimaker S5. I see lots of posts for organizing print cores (super helpful!) but I'm curious how people track what material was last printed?  I'm tempted to make an organizer with a little spot below to record what material+color was last used.

[2021coyneo 8]

How many cores do you have? I usually do print core cleaning when I know I'm not gonna use the core for a bit (3-4 weeks plus), especially the BB cores. If you have a lot of cores, maybe printing a print core holder and using small sticky notes when they are in the box could work. I attached one bellow I am printing as we speak. I organize by type (AAs in one, BB + CC in the other) Here's the link: https://www.thingiverse.com/thing:3849752/files It is not my design but I love it and I recommend it.

[martaaay 1]

I only have 3 AA and 1BB (soon to have a CC red), but I'm already having trouble tracking what plastic I last printed with, and I'm cycling between plastics fairly rapidly.

 

That link looks great. Thanks!  Sticky notes sounds like they'd work well. Or maybe a piece of acrylic glued on and a wet erase marker.