A remix of the 3x1 - Unversal Drop-In Lid to hold a 12-piece set of Sakura Micron Manga markers, or this Chotune set as sold on AliExpress. The lid is also marked with corresponding pen size, to easily identify which pen is missing.

From the original model description:

Use Drop-In Lids to cover your Multibins. They are only “drop-in”, so they don’t click into place.

This is a "Universal" Lid, which means it can be placed over multiple Multibins or divided Multibins.

Learn more about this part at https://multiboard.io/knowledge-hub

Printing Guidelines:

Use 3 perimeter wall thickness, 0.2 mm layer height, 15% infill, and no supports. Apart from that, use your printer's default settings.

The printing orientation is as provided in the file. Make sure the downloaded files are .STL. This part has been designed with a tolerance of 0.25 mm. Your printer will need to be able to bridge gaps of up to 30 mm for some designs.

For more information about printer settings, click here.