This design takes jomiller97's stackable sanding disk holder design and mashes it up with the Sy's Peglock system template. This design works as a bottom and then you can add as many of jomiller97's original design for a pegboard hangable stack. This design is sized to have 7 additional holders that line up with the spine (giving you 8 bins total) but would likely work fine if you added more, to a point…be reasonable.
Printables won't let me call this a remix of both the original holder by @jomiller97 and the Sy's Peglock system by @StellasFun so here is the link to the original Sy's Peglock System.
Since I don't have a multi-material printer, I couldn't take advantage of jomiller97's integrated labeling, so I also made labels that you can glue on. You can print these on a single material printer, add a pause before the layers with the numbers to swap filament, and still get the sharp look of 2 color labels. I also included a Fusion360 file for the label with a parameter that you can change to get a different number if you need others.
The author remixed this model.
A remix of jomiller97's sanding disk holder but with the Sy's Peglock attachment in the back and a curved spine to keep the stack happy.