If you've ever built a cabinet, you've built a shelf pin jig. And it probably worked great, for about ten minutes. Then the holes reamed out, the bit started wandering, and the jig became a very accurate way to drill inaccurate holes. So you made another one. Same result. Another one. You get the idea.
Let's end that cycle of disappointment. This guide walks through building a shelf pin jig with steel drill bushings: cheap to make, dead accurate, and built to last. Prefer to watch? Here's the whole build in about three minutes:
Why bushings beat bare wood
A wooden jig wears out because the spinning bit chews on the hole every single time. A steel bushing takes that abuse instead. Ours come in 5mm and 1/4" for shelf pins (plus 7/64" for pilot-hole jigs; more on that below), and every size presses into a plain 3/8" hole.
- Tapered ends make them easy to start and tap in.
- Ribbed sides grip the wood like they mean it. No glue needed.
- A slight bevel on the top edge guides the bit in, so you can work fast with minimal metal-to-metal contact.
- Not case-hardened, on purpose. Most jig work is done with brad point bits, and a rock-hard bushing grinds down their sharp point and spurs. Plain steel stands up to the bit and keeps it sharp a lot longer.
- .664" long. That's over 5/8" of guidance, which is what keeps a hand-held drill perpendicular to the panel.
What you'll need
- 3/4" jig stock, 4" wide (plywood or any stable 3/4" material)
- A strip of scrap ripped to exactly 32mm wide, for spacer blocks
- A 3/8" brad point bit and a drill press with a fence
- Some thin scrap for a chip breaker, a clamp and a stop block
- Steel drill bushings (a 10-pack fills about 12" of jig at 32mm spacing)
- A brad point bit to match your bushings, plus a stop collar or some masking tape
Step 1: Forget the tape measure
You could lay out 2" spacing and call it a day. But let's shoot for 32mm centers, the standard for most cabinets these days. Easy enough: there are 25.4mm to an inch, so just divide 32 by 25.4 and you get…
…1.25984252 inches. Yeah, that nightmare. The old tape measure and pencil approach ain't gonna cut it. So let's try something smarter.
Step 2: Make 32mm spacer blocks
Rip a piece of scrap to exactly 32mm wide and draw a reference line down both sides. Then chop it into a bunch of short blocks. These little guys are about to do all your measuring for you.
Step 3: Set up the drill press
You can make the jig from just about any 3/4" material, and the side offset is up to you. Here we're using a 2" offset, so the jig itself is 4" wide. We're making a short one for the demo, but once everything is set up, this is the time to knock out a few different lengths.
Chuck a 3/8" brad point bit in the drill press and clamp the fence 2" from the bit. Set the depth stop so the bit just reaches the table, then screw down a piece of thin scrap as a chip breaker. The bit finishes in the scrap, so you get nice clean exit holes.
Step 4: Drill the first hole
We like the first hole 6" from the end. Make a mark at 6", line it up under the bit, clamp a stop block against the end of the jig, and drill.
Step 5: Add a spacer, drill, repeat
Here's where the magic happens. Instead of measuring and marking every hole, drop one 32mm spacer block between the stop and the jig, slide the jig over, and drill. Add another spacer, drill again. Repeat until you run out of jig.
Now you can see what those reference lines were for: keep them square to the fence as you go and you won't make a mistake.
Step 6: Install the bushings
Once the holes are drilled, tap the bushings in, tapered end first. A quick bevel along the jig's bottom edge helps with sawdust management later.
Add a couple of pivoting stops to the end (we call them "helicopters"), and lining the jig up with the front of the cabinet becomes a snap.
Step 7: Drill your shelf pin holes
If you have a stop collar, put it to good use so every hole winds up at the right depth. No collar? A flag of masking tape wrapped around the bit gets it done too.
Speaking of tape: cover any holes you don't want drilled. It's the easiest way to avoid a mistake you'll be staring at for the next twenty years.
For the back row, just hold the jig in place and go for it.
For the front row, give the helicopters a quick twist to register against the cabinet front, and drill away. For intermediate shelves, a spacer cut from scrap is all you need.
That's it
You now have a shelf pin jig that was cheap, accurate, easy to make, and should last a lifetime.
Bonus: same trick, smaller bit
Our 7/64" bushings have the same outside diameter, so they press into the same 3/8" holes. Build them into a strip and you've got a pilot-hole jig for the #6 screws on drawer slides, hinge plates and most cabinet hardware. No center punch, no wandering bit. You can even mix sizes in one jig.