Kreg KMA3225 Shelf-Pin Jig 1/4in - Precise Shelf Hole Jig

In this review the Kreg KMA3225 Shelf-Pin Jig 1/4in is evaluated for home woodworkers and hobbyists who need reliable, repeatable shelf-pin holes. The bottom line: this kit shines when you want clean, straight holes in cabinet sides without complicated setups, and it makes creating wobble-free shelves straightforward. The review focuses on usability, accuracy, included accessories, and whether this jig delivers professional-looking results for typical cabinet and shelving work.

Key Features

• Six-hole layout: The jig creates six perfectly straight holes at 1 1/4 in increments so shelves sit level and do not wobble.
• Hardened-steel guides: The six included hardened-steel drill guides help produce clean, precise holes and resist wear over repeated use.
• 32 mm system compatibility: The built-in 32 mm system accurately spaces shelf pin holes for common hinge and drawer slide patterns used in cabinetry.
• Expandable design: You can connect a second shelf-pin jig to cover larger cabinet heights without losing alignment.
• Included accessories: The kit comes with a 1/4 in drill bit, stop collar, and a sample pack of 1/4 in shelf pins so users can start drilling right away.
• Compact and durable: The jig packs into a small footprint yet offers sturdy guides for repeatable hole placement on typical shelving projects.

Who It's For

The KMA3225 is best for DIYers, cabinetmakers, and hobby woodworkers who need a simple, reliable way to place shelf pin holes without marking and measuring each position. It suits users working on kitchen cabinets, bookcases, and custom shelving where even spacing and quick setup matter.

It may be less suitable for someone who requires nonstandard hole spacing beyond 32 mm increments or who needs a digital measuring system; those users should look for a jig with custom spacing or more advanced registration features.

Pros & Cons

Pros

• Produces straight, clean holes thanks to the hardened-steel drill guides that reduce bit wander.
• Good value with useful accessories included, so you can begin work immediately.
• Expandable and compatible with common 32 mm cabinetry spacing for hinges and slides.
• Compact design that is easy to handle and store between projects.

Cons

• Some users report occasional alignment or spacing frustrations, so careful setup is important for perfect results.
• Fixed increments mean less flexibility for nonstandard hole layouts without additional jigs or modification.

Specifications

Product	Shelf-pin drilling jig
Hole size	1/4 in (6 mm)
Hole spacing	1 1/4 in increments (32 mm system)
Includes	Shelf-pin jig, 1/4 in drill bit, stop collar, sample shelf pins
Drill guides	Six hardened-steel guides
Expandable	Can connect a second shelf-pin jig

Our Verdict

The Kreg KMA3225 is a practical, cost-effective jig that delivers consistent, wobble-free shelf holes for most cabinetry and shelving tasks. It offers durable guides and useful accessories that make setup and repeatable drilling fast, so woodworkers seeking reliable 32 mm spacing will find strong value here. Those needing custom spacing should consider alternatives, but for standard shelf work this jig is a solid buy.

Frequently Asked Questions

Can I use this jig for drawer slide or hinge placement?
Yes, the jig uses the 32 mm system which aligns with common hinge and drawer slide hole patterns used in cabinetry.

Are replacement drill guides available?
Replacement parts are offered by the manufacturer, and the hardened-steel guides are designed to resist wear for long-term use.

Will the included bit and stop collar work for plywood and solid wood?
Yes, the 1/4 in drill bit and stop collar included in the kit are suitable for typical plywood and solid wood cabinet sides; adjust depth as needed for different material thicknesses.