Look at this backyard bowling lane. It's ingenious, with strings to reset the pins and a sloped gutter to bring the ball back. Then... ...ll back. Then you think about how the strings and pins laying around would interfere with the second bal... ...my deck is any indicati...
https://www.neatorama.com/2018/02/18/The-Mechanics-of-Pinsetters/
The Mechanics of Pinsetters
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