Build a Lockable Tip Jar Box in One Day

Tired of tips walking away? A lockable tip jar box keeps cash visible but secure, with a simple hinged door and padlock latch.

What you’ll get: a practical build plan, hinge layout tips, cleaner cut strategy, and sanity-saving sanding advice.

Plan the hardware layout first

• Place the latch and hinges on the face before cutting. Mark hinge centerlines so the knuckles sit across the opening, not on the removable panel. That prevents the door from hinging on itself.
• Leave clearance on the latch side. If the post crowds the edge, shift the layout slightly so the lock engages smoothly.
• Dry-fit the acrylic window and the door opening locations so nothing collides.

Cut the opening the easy way

• Drill a hole at each corner to start the jigsaw cleanly. It reduces tear-out and gives you turning room.
• Use the M12 Milwaukee Jigsaw to remove the entire door panel instead of trying to reuse the cutout. Then cut a new, square insert on the Ryobi Tablesaw for a better fit.
• For the round money window, cut the circle and back it with Acrylic so tips are visible but protected.

Get the fit right with sanding and shaping

• After tablesawing the new door insert, sneak up on a snug fit with the Ryobi Orbital Sander.
• Use the Dremel to ease internal corners of the frame and lightly round the insert’s corners so the door swings freely.
• Check swing and latch engagement often; small sanding passes beat big re-dos.

Assemble strong and straight

• Glue and clamp the box panels, then pin or brad nail to hold while curing. The Ryobi 23 Gauge Pin Nailer is great for the thin bottom panel; the Ryobi 18 Gauge Brad Nailer helps on thicker faces.
• Attach hinges after the door fits the opening. Pre-drill with the M12 Milwaukee Drill to avoid splitting and to keep hinge screws tracking true.
• Set the latch last, with the actual lock in place, so alignment is guaranteed.

Final takeaway: Keep the design simple, cut the door as a separate, square piece, and tune the fit with careful sanding. You’ll end up with a sturdy, lockable tip jar that does the job day one—and looks better after paint.