These are card trays to be used with Hanabi.
You need to print three token trays: two for the time tokens and one for the fuse tokens. Depending on whether you use the rainbow cards, you need to print one or two plain trays.
The token version holds the time and fuse tokens. Once a token is used, it is shifted to the covered side. If it becomes available again, it is rolled back to the uncovered side.
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The author marked this model as their own original creation. Imported from Thingiverse.