These will help you position your trays. The stoppers press fit into the trays.

Pictured are two sets of the 3 slots stoppers. I have not tested the 1 and 2 slots, but I decided to model them up for this post.


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If you remix my model please include the following in description:
Author: Mr.Jib
Link to author: https://www.printables.com/@Jib_88963
Title: TableWar Tray Stopper
Source: https://www.printables.com/model/649376
License: CC BY-NC-SA