Bowling Ball Quarter Scale Layout Tool

This is a quarter-scale model of a standard 8.5" radius bowling ball designed to help with ball drilling and layout planning. The tool includes degree markings around the back and 1-inch spaced reference lines across the surface, making it easier to visualize layouts, grip positions, and alignment.

I designed and modeled this in SolidWorks for my friend Bill, with accuracy and practicality in mind. The markings allow you to experiment with different grip spans and layouts at a manageable size.

The model is 254 x 127 x 127 mm and needs to be printed at 100% scale for accuracy. Supports are needed.