Modified epoxy bowling balls were developed starting in 1996 to create more hook potential in oil conditions. Epoxy is normally a very hard and chemically resistant material with low friction, but the modified epoxy used in these balls contains secret ingredients that give it high friction and an ability to rapidly absorb oil. Over 900 different ball formulas were tested before finding ones that could create maximum friction in oil without hooking too early. The modified epoxy shells allow for more midlane hook compared to other ball materials and their performance can be fine-tuned based on the specific additives used.

1. Epoxy Bowling Ball Shell Introduction 2004-2005

2. Epoxy Shell

6. Friction for Existing Balls

7. Epoxy Epoxy normally has about the same friction as Polyester

8. Straight Epoxy

9. Epoxy with Different Plasticizers Plasticizer A- Plasticizer C Plasticizer B- Plasticizer D – COF in oil same as White Dot on dry lane Superflex

11. Early Epoxy Shell Test Hooked Early

12. Epoxy shell got better with time

13. Get different reactions by using different Ingredients

14. Good length- Sanded Roll vs. Polished Epoxy

15. Friction Chart for Columbia Shells

16. Today’s COF Averages

17. Epoxy Shells Can Get Ultra High Friction

19. Latest Version- Getting Close to Production

20. Spaghetti shell after 50 games - No loss in Performance