Gear Up to Roll the Dice

This gear train speeds up the throwing arm to pitch the dice pretty fast.  Place thumb and finger on the large gear indents to turn the large gear that increases the speed of the small gear, which swings the arm.  

I found that printing the posts vertically worked better than printing them horizontally.  

The gears were downloaded from McMaster Carr.  The ratio of teeth between the gears is 60:15 (4/1).  So, to turn the thrower gear 90 degrees, the larger drive gear needs to turn 1/4 as much, or 22.5 degrees (if my math is correct).  Since there is a very small load, not much torque is needed to throw the dice as fast as you wish.

See my similar design which employs a much smaller base that requires much less filament and print time.

The golf wood driver #1 is an option to the hitter.  The hitter has a bucket that holds the dice.  The wood driver hits the dice.