ISS Vanguard - Card Sleeve Time Tracker

Sometimes I got all those little time marker everywhere and lost count.

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Print instructions:

• Print the sleeve vertically. Be sure to add enough brim to keep the print stable.
• Print the slider vertically. Add organic support.

The slider should snap in place on the sleeve with a little bit of prying. So far I've made 5 kits without breaking anything :)

With a card in place, the slider should be sliding snug enough to stay in place.