30 Second Timer

OK, let's say you're the boss and you've got employees coming in every 5 minutes whingeing nonstop about what-all. But with this 30 second timer, you tell them they've got 30 to tell you what they want, and then starts the click…...click…...click…... They'll get so nervous that they'll run from your office.

Or use it as a game timer. Or just stare at it.

It requires one 12mm diameter steel ball.

Printing

The 3MF file provided uses an accent color for the decorative dots along one side. But you can also remove the color painting and slice and print as just a single color.

Assembly

The two halves should just press together, but if it seems they might come loose, add a drop or two of superglue to each side. Then slide the slider piece, cup side up, onto the side grooves. Then slide the base onto the grooves at the bottom. You may need to work the slider up and down some so that it moves smoothly.