Offset Lathe Chuck Jaws - Preserve Painted Barrels (3 Sizes)

What it is

The 3D Printed Offset Lathe Chuck Pen Jaws set lets pen turners perform off-center drilling on standard chucks. This four-jaw kit preserves original painted surfaces or char from whiskey barrels on finished pens, exactly as described in our blog post on saving painted surfaces. The black jaw serves as the base. Green jaws handle larger tubes (12.5 mm, 15/32 in, 37/64 in). Blue jaws fit Sierra, cigar, and junior lower tubes (27/64 in, 10 mm, 10.5 mm). Red jaws accommodate 3/8 in bolt tubes plus 7 mm and 8 mm sizes. These Tools solve the common challenge of centering tubes while protecting unique surface details. Makers report cleaner off-center results and fewer ruined blanks compared with makeshift methods. The durable 3D-printed construction withstands repeated workshop use and stores compactly when not in use.

Setup & use

Install the jaws directly into your existing lathe chuck. Select the color-coded jaw that matches your tube diameter, mount the blank, and drill off-center. The precise fit keeps tubes stable during turning. Compatible with most self-centering chucks used by pen makers. Always verify tube size before selecting the jaw to avoid slippage.

1. Choose the matching color-coded jaw for your tube diameter.

2. Insert jaws into your lathe chuck jaws slots.

3. Mount the pen blank securely in the offset position.

4. Drill slowly with light pressure using sharp bits.

5. Remove and inspect the preserved painted barrel surface.

These off-center drilling jaws work with tube sizes from 7 mm up to 15/32 in. They pair perfectly with pen kits and help Magic Juice stabilizer reach every surface. Add a tube-size reference table for quick selection during projects.

Shop pairings

Pair these jaws with pen kits for complete projects, Magic Juice to stabilize barrel material, and casting supplies when creating custom resin blanks. Explore more lathe accessories in our tools collection and additional 3D-printed items in Mix&Match 3D Printed Singles. For best results, combine with sharp drill bits and light pressure during the offset pass. This accessory belongs in any serious pen turner’s toolkit alongside standard jaws and mandrels. Color coded pen turning jaws reduce setup time and protect delicate finishes on every blank. Off-center drilling jaws expand design options without risking the original painted barrel. Makers who need to preserve painted barrel details rely on these precise 3D-printed inserts daily. The set integrates seamlessly into existing workflows and stores neatly in any shop drawer.

Made in USA from tough PETG filament, these jaws undergo workshop testing for repeated use. They fit most self-centering chucks common in pen turning and require no special adapters. Always match jaw color to tube diameter before mounting to ensure stability and clean results every time.