A really fun, easy-to-print toy that entertains cats and kids alike. It rolls coins fast and straight and they zip right across the floor or table. I modeled this after a Brachistochrone Curve for really fast descent down a ramp.

Works with most common coins, I've specifically tested it with the following:

Canadian:

• Nickel
• Quarter
• Toonie ($2 coin)

Euro:

• 1 cent
• 2 cent
• 1 EUR
• 2 EUR

American:

• Half-dollar (50c)

The best coin I tested was the 2 EUR coin, because it has nice weight and the thickness keeps it completely stable as it launches out the bottom. The American Half-dollar is also really nice because it's large and heavy and will roll a fair distance.

Prints great with no supports required and comes out super sturdy, all corners are reinforced. Will survive a good amount of drops and being thrown around.