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It’s no secret to kids that a big cardboard box is the best play fort you can have. Find a washing machine box on the curb, drag it home: instant fun. If you want some amenities, such as a drawbridge door or firing slits, you need to put a little extra work into it.

I’ve embellished ours in the past with everything from a Swiss Army knife to a box cutter. Turns out, a Dremel Multi-Max is a much easier, more controllable tool for this than anything I’ve tried. Add some good fasteners and there’s no limit to the size and complexity of the cardboard castles you can construct.



Dremel Multi-Max oscillating tool with circular drywall/wood blade
Drill with ¼” bit
Big cardboard box from a fridge or washer/dryer
Cardboard supports that come with the box (optional)
Small cardboard tube
Box rivets from Mr. McGroovy’s or other fasteners
Ruler and pencil

MAKE_DownloadPDF_icon.gifDownload the Project PDF
(Right click to save the PDF to your desktop.)

John Edgar Park

John Edgar Park likes to make things and tell people about it. He works in CG animation at DisneyToon Studios and writes for Make, Boing Boing, and other places online and in print. You can find him at and twitter @johnedgarpark — if you like that sort of thing.

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