The Kreg KMA3225 Shelf Pin Jig 1/4 in is a shelf pin drilling jig for cabinet and furniture layout. This is a shelf pin drilling jig designed for drilling evenly spaced shelf support holes in cabinets, bookcases, and other built-ins. Model Number: KMA3225. If you want adjustable shelves that sit flat and do not wobble, this jig handles the spacing and alignment work that usually eats up time.

The big selling point is repeatable spacing. The drill guides are centered on standard 1-1/4 inch, 32 mm increments, which is the spacing most cabinetmakers and furniture builders actually use. Instead of marking every location with a tape and hoping the rows match from panel to panel, you line up the jig and drill six holes in one setup. That keeps shelf rows straight and cuts down on layout mistakes that can ruin a finished cabinet side.

Kreg uses hardened-steel drill guides here for a reason. On a jig like this, guide wear matters because worn holes mean sloppy drilling and shelf pins that do not line up cleanly. The steel guides help the included 1/4 inch brad-point bit stay on track for clean, precise holes. That is what gives you a tighter, more dependable fit for shelf pins and better-looking results in finished work.

The jig is also set up to be easy to position. A fence helps register the jig off the edge of the workpiece so your rows start straight, and molded-in alignment marks plus an indicator window make it easier to see what you are doing while lining up the pattern. That matters when you are retrofitting shelves into existing furniture or drilling inside cabinet parts where visibility is not great.

This is not limited to shelf work either. Because it is 32 mm system compatible, the jig can also help locate concealed hinge plate screws and the front hole location for drawer slide installation in frameless cabinets. For anyone building Euro-style cabinetry, that makes it more useful than a one-job-only jig.

Jobsite practicality is solid. The jig can snap to a second matching jig to extend your drilling run faster, which is handy when you are working on tall pantry cabinets, bookcases, or long furniture sides. There is also on-board storage to keep small accessories close by, which is a simple feature but one you appreciate when you are moving between bench work and installation.

Who is this for? Cabinet installers, trim carpenters, furniture builders, remodelers, and serious DIYers who want clean adjustable shelf layout without building their own template. If you only drill shelf pin holes once in a blue moon, a homemade story stick can get by. If you want fast, repeatable cabinet hardware and shelving layout with less guesswork, this Kreg shelf pin jig makes a lot more sense.

Why the Kreg KMA3225 Shelf Pin Jig 1/4 in earns a spot in a cabinet shop

This is the kind of simple jig that saves a lot of aggravation because it turns shelf layout from a measuring job into a repeatable drilling job.

• Who it's for: Cabinetmakers, remodelers, furniture builders, and serious DIY users adding adjustable shelves or working in the 32 mm cabinet system.
• Why it stands out: The hardened-steel guides, built-in fence alignment, and 32 mm compatibility make it more useful than a basic hole template.
• Worth knowing: This is a precision layout jig, not a full cabinet system by itself. If you do long panels regularly, pairing it with a second jig is the move.

• What does this jig do? It drills evenly spaced 1/4 inch shelf pin holes for adjustable shelves in cabinets, furniture, and built-ins.
• What spacing pattern does it use? The drill guides are set on 1-1/4 inch, 32 mm increments, which matches standard 32 mm cabinet system spacing.
• Can it help with cabinet hardware layout too? Yes. It is designed to help with locating concealed hinge plate screws and the front hole position for drawer slide installation in frameless cabinets.
• How many holes can it drill before repositioning? The jig drills six holes in one setup.