Reader Project: Walnut Piggy Banks Built Around Antique Post Office Doors

Photo of author

Dave B. of Cumming, Georgia built a pair of piggy banks for his grandchildren, each one fronted with a salvaged antique post office door — one that opens with a key, the other with a combination dial. The brass doors still carry their original box numbers, 6281 and 5963.

The boxes are black walnut with a coin slot cut in the top, finished with a clear sealant and no stain. Dave put the pair together in about five hours using a table saw and a miter sled, with roughly $75 in materials and no plans.

In Dave’s words

A friend mentioned this project and it caught my interest, so I made a couple for my grandchildren.

The build

  • Project type: Boxes & small items
  • Skill level: Intermediate
  • Wood: Black walnut
  • Finish: Clear natural sealant, no stain
  • Tools: Table saw, miter cut sled
  • Time: About 5 hours
  • Cost: About $75 in materials
  • Plans: No plans

Biggest challenge

Not too many issues or problems. It’s critical that you get the inside dimensions just right because of the interior design of the doors. The hinge mechanism can get in the way.

Dave’s notes on the hinges and coin slot

I decided to mortise the door hinges into the sides to assure the short screws would take a good bite. Next time I build one, I think I’ll resize the box so that the door slides in and just fits snugly.

As far as the coin slot goes, there are several ways you can cut it. I don’t have a scroll saw, but that would be the most efficient way. In my case, I drilled holes on each end of the area I wanted the slot to be, cut the opening with a jig saw, then cleaned up the cut with a sanding attachment on a Dremel tool.

Photos

Both finished walnut banks side by side, with coin slots cut in the tops and the original post office box numbers still on the doors.
Both finished walnut banks side by side, with coin slots cut in the tops and the original post office box numbers still on the doors.
The key-operated door, number 6281, set into its walnut box with the brass hinges on the right-hand edge.
The key-operated door, number 6281, set into its walnut box with the brass hinges on the right-hand edge.
The second bank, number 5963, with a combination dial and the coin slot visible on top.
The second bank, number 5963, with a combination dial and the coin slot visible on top.
The key-operated bank with its door swung open. Dave mortised the hinge leaves into the walnut side so the short screws get a full bite, and a coin dropped through the slot sits inside.
The key-operated bank with its door swung open. Dave mortised the hinge leaves into the walnut side so the short screws get a full bite, and a coin dropped through the slot sits inside.

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