StewMac Soundhole and Rosette Routing Jig Tool - Precise 2in to 6in

Our review of the StewMac Soundhole and Rosette Routing Jig Tool finds it to be a straightforward, well machined jig for makers and repair techs who need accurate concentric soundholes and rosette channels. Designed by Don MacRostie at StewMac, the tool's biggest selling point is precision: the 3/16' registration pin and indexed diameter scale make it easy to repeat perfectly concentric circles for guitars and ukuleles. It is not a standalone router; it is intended to be used with a Precision Router Base and a rotary tool such as a Dremel or Foredom.

Key Features

• Adjustable diameter: The jig adjusts from 2' to 6' to cover ukuleles through full-size guitars without swapping tools, saving setup time.
• Concentric registration: The 3/16' registration pin ensures the routed soundhole and rosette channel are perfectly centered for consistent results.
• Machined metal construction: Solid aluminum and brass parts provide rigidity and reduce flex during routing for cleaner cuts.
• Indexed scale: The clear indexing scale lets you quickly set and repeat exact routing diameters across multiple instruments.
• Compatibility: Made to attach to StewMac's Precision Router Base and accept common rotary tools, which keeps the jig versatile in a small shop.
• Complete with mounting hardware: Mounting screws and instructions are included so you can start setup without extra parts.

Who It's For

The StewMac soundhole and rosette jig is aimed at luthiers, hobbyist builders, and repair technicians who already use a router base and a rotary tool and want more consistent, professional-looking soundholes and rosette channels. Its ability to scale from 2' to 6' makes it useful for projects ranging from ukuleles to dreadnoughts.

It is not ideal for someone without a compatible router base or rotary tool, since those items are sold separately. If you need an all-in-one routed system with a dedicated motorized unit, look for a complete router kit instead.

Pros & Cons

Pros

• Solid aluminum and brass construction gives reliable rigidity and repeatable cuts.
• Clear indexing and 3/16' registration pin deliver concentric, accurate results.
• Wide diameter range from 2' to 6' covers most guitars and ukes in one tool.
• Includes mounting screws and instructions for straightforward setup with a compatible base.

Cons

• Requires a Precision Router Base and a rotary tool (not included), so additional purchases are needed.
• Not a powered router itself, so beginners without existing router accessories may find initial setup nontrivial.

Specifications

Our Verdict

The StewMac Soundhole and Rosette Routing Jig is a worthwhile tool for builders and shop techs who already own a router base and rotary tool. Its machined aluminum and brass construction, indexed diameter scale, and registration pin produce accurate, repeatable soundholes and rosette channels across instruments, making it good value for anyone focused on consistency and finish quality.

Frequently Asked Questions

Does this jig come with a router or rotary tool?
No. The jig requires a Precision Router Base and a rotary tool such as a Dremel or Foredom, which are sold separately.

What diameter range does the jig cover?
The tool adjusts from 2' to 6' (50.8mm to 152.4mm), suitable for ukuleles up to full-size guitars.

Is the jig durable for shop use?
Yes. It is made from solid aluminum and brass parts and includes mounting screws and instructions for reliable repeated use.