SIIIXS 4-Inch Wood Lathe Chuck Set — Self-Centering 4-Jaw, 1 inch x 8 TPI + 3/4 inch x 16 TPI Adapter

Precision and versatility for wood turning

Meet the SIIIXS 4-Inch Wood Lathe Chuck Set, a compact, self-centering 4-jaw chuck designed for woodturners who value accuracy and ease of setup. It supports lathes that use 1 inch x 8 TPI threading, and with the included adapter it also fits 3/4 inch x 16 TPI threading. This dual compatibility means you can switch between projects without swapping chucks, helping you stay in the flow from spindle work to bowl turning.

Key benefits at a glance

• Stable, balanced workholding with self-centering jaws that reduce runout during turning.
• Rust-resistant construction for reliable performance over time in typical workshop conditions.
• CNC machined components deliver consistent engagement and smooth operation.
• Jaw clamping and expansion capabilities accommodate a range of workpieces; additional jaws are available in the SIIIXS store.

What makes it practical

• Adapter converts between thread standards, expanding lathe options and reducing the need for multiple chucks.
• Compact chuck body paired with round jaws provides a firm grip for bowls, spindles, pens, and other small to mid-size pieces.
• Includes tightening gear key, T-Allen wrench, wood screws 3/8 inch, and the adapter for thread-size conversion.

What’s in the box

• Chuck body
• Round jaws
• Tightening gear key
• T-Allen wrench
• Wood screws 3/8 inch
• Adapter to convert 1 inch x 8 TPI to 3/4 inch x 16 TPI

Real-world use cases

Whether you’re shaping delicate spindle work or turning small bowls, this chuck helps you focus on the cut with confidence. The design emphasizes secure grip, ease of setup, and repeatable performance, while the adapter broadens your lathe compatibility. As with any woodworking tool, results depend on technique, material, and safety practices, but the chuck is built to support a wide range of turning tasks with dependable reliability.