Rolling Down The Lane™ JoPo Twist-Compatible Depth Calibration Jig (1-1/2″ Bits)

Description

Like many of you, I’ve been a JoPo fan for a long time—their Twist™ system is a game-changer. But when I saw the price of the system-specific drill bits, I knew there had to be a better way for the everyday maker and pro shop operator.

It’s no secret that the TwistIt™ hole requires a precise 3.22″ depth (measured from the lowest point of the outer cutting head). This calibration jig allows you to achieve that exact depth using a standard 1-1/2″ bowling ball drill bit and a simple set screw shaft collar.

By using this jig to precisely set your collar, you can save a significant amount of money without sacrificing the accuracy of your thumb installations. It’s simple, cost-effective, and engineered to be the only reference tool you’ll need to keep your gear dialed in.

PRO TIP: If you need to source a high-quality 1-1/2″ bit or other pro shop supplies that I don’t manufacture here, I highly recommend the team at BowlingIndex.com. They are my personal go-to for great service and fair pricing.

JoPo Twist IT™ is a trademark of its respective owner. Rolling Down The Lane is not affiliated with, or endorsed by, JoPo.

(Bit and collar not included. Shown for reference and demonstration purposes.)