We Built a Box That Won't Be Opened Until 2076 (No Pressure)

July 7, 2026

[IMAGE: dedication ceremony, museum]

So here's a fun sentence I never thought I'd type: I built something on July 7th, 2026 that a room full of people are legally, historically, and emotionally obligated to leave closed for the next fifty years.

That's the job the Carmel Clay Historical Society handed me back in January — build a time capsule that gets sealed this year and whose contents don't see daylight again until 2076, when America turns 300 and Carmel turns 100. Two birthdays, one box. No pressure at all, right? Just build something that has to survive half a century showing itself off in a museum, get admired the whole time, and somehow still look brand new when somebody's great-grandkid finally cracks it open. Cool, cool, cool.

Where the Design Actually Came From

I didn't want to just build "a nice box." I wanted this thing to belong in that museum — like it had always been there; it was meant to be there.

Andy asked me during a call early in the project what ideas I had about the design. I said to him that nothing has really solidified and that I would like to visit the museum and let it tell us about the design. So I went and looked. Andy, the museum's Historian and Collections Manager and I walked the floors. The museum has this gorgeous oak desk salvaged from the original Monon Station, and the building itself is wrapped in this cornice detail on the exterior that just... says Carmel. Andy told me stories about various pieces in the museum, talked about the journey to build the new facility, and pointed out some of his favorite pieces. Add in some Art Deco influence from a desk that Andy loves and the Monon Trail's whole railroad heritage, and the design basically told me what it wanted to be. The trim detail on the capsule mirrors that museum cornice on purpose — so when it's sitting up there, it doesn't look like an object placed in the building. It looks like it grew out of it.

I remember the moment Andy and I were on the top floor and on an outdoor patio. We were talking and I was just looking around at the view and the building. Then it hit. There it was right in front of us. The first image that started a mental picture and journey for the capsule's design. At that moment, the ideas started FLOODING in like the waves of a hurricane!

[IMAGE: the patio where we were standing]

[IMAGE: early concept render]

The Wood (Because Of Course You Want to Know)

Quartersawn white oak, with black walnut for contrast on the detail work. Classic, honest, local-hardwood pairing — nothing exotic, nothing trendy, just good wood that's going to age like it means it. Fifty years from now, that walnut inlay against white oak should look even better than it does today, which is a wild thing to say about a piece of furniture but also just... true, if you build it right.

The Part Nobody Sees (Until They Really Need To)

This is the stuff that separates "pretty box" from "engineered to survive five decades":

Hidden brass hinges — embedded inside, so the outside stays clean. No visible hardware breaking up the lines.
A hex-operated locking mechanism — on purpose, not a key, not a digital lock. Keys get lost. Batteries die. A hex-bit screwdriver will still exist in 2076. Simple wins (we hope).
Internal slots sized for wood movement — the letters and keepsakes inside are wood too, and wood breathes. The box had to plan for expansion and contraction over fifty years without ever pinching or cracking anything inside it.
Adjustable feet — because museum floors aren't always perfectly flat, and neither is life.
A removable stand — the capsule needs to come off its base for display flexibility. So it's bolted, not glued, not fused. Snug, not clamped — the joinery does the real work.

Nothing on this list is flashy. All of it matters.

[IMAGE: early letter test, raw stock]

The Finish — No Shortcuts, No Plastic

Here's where I got a little stubborn. This is finished entirely in polymerized linseed oil and a hard wax oil blend. No synthetic topcoat, no chemicals, no plastic-feeling poly shield. Just oil, wax, and wood, done the way it's been done for a couple hundred years — because it works, and because it can renew itself forever without ever needing to be stripped and redone.

Somebody, someday, is going to wipe a little fresh oil onto this thing and bring it right back to life. That's the whole point of a finish like this — it doesn't wear out. It just occasionally asks for a drink.

[IMAGE: processing the linseed oil]

Sealed. Displayed. Waiting.

[IMAGE: final assembly/display]

We finished the build in June, and on June 13th the capsule was dedicated in a ceremony at the museum — Mayor Sue Finkam, Carmel Clay Historical Society Historian Andy Wright, and many local folks whose letters are now sealed inside, engraved into wood cut from actual Indiana hardwoods. Then the lid came down, the screws went in, and that was that. It's on display now on the first floor of the Carmel Clay History Museum, and it'll sit there — unopened — until 2076.

I may not be around to see it opened. Neither will most of the people who wrote those letters. That's not lost on me. It was surreal. I mean, when I make everything else, I hope it lasts a long time and build it to. But this one, it HAS to last a long time...at least 50 years! There's something genuinely humbling about building a thing you know you'll never see the end of — you just have to trust the wood, trust the finish, and trust that you did the joinery right the first time, because there's no "we'll fix it later" fifty years from now.

[IMAGE: 100 year Carmel Resident & Mayor/dedication]

Why This One Mattered

I get to build a lot of things. Boxes, coasters, furniture, weird one-off commissions that make my week. But this one's different — it's not going home with a customer, it's not getting used, it's just going to exist, quietly holding a moment in time for people who haven't been born yet.

That's a strange kind of honor, and I'm grateful the Historical Society trusted a small woodshop in central Indiana to build it. If there's a lesson in it, it's this one: build like someone's watching, even when — especially when — no one will be, for fifty years. I'm also grateful that several of my kids promised to return to the museum in 2076 to be a part of the opening of the capsule.

Here's to 2076. I hope whoever opens that box thinks we did alright.

God bless,

Adam Horbett, Chief Mistake Officer, Sunflower Woodworx