Alignment-puzzle money box — 3D-printable model preview

AR view

Kids & play Advanced

Alignment-puzzle money box

Drop a coin through three turning layers that only let it fall when every hole lines up

A money box that has to be solved before it will take your money. The coin slot in the cap sits over three layers, each with a single coin hole in a different corner. Lift each layer, turn it a quarter, and put it back until all the holes stack up under the slot; get it right and the coin clatters all the way down into the bank. Get it wrong and it stops on a layer, rattling. To empty it, lift everything off.

Customize this model

Size (Base A): 90 × 90 × 50 mm
Shape: Rectangular
Walls: 2.4 mm
Volume: 88.1 cm³
Est. weight (PLA): 109 g
Parts to print: 1
Category: Kids & play
Made by: Krypto
Built in: 43 steps

What’s in it

Rectangular, 90 × 90 × 50 mm, with 2.4 mm walls
4 holes in the floor
Raised text: “BANK”
4 more bases built on (Bases B–E)
Base B: rectangular, 90 × 90 mm, 18 mm tall (stacked)
Base C: rectangular, 90 × 90 mm, 18 mm tall (stacked)
Base D: rectangular, 90 × 90 mm, 18 mm tall (stacked)
Base E: rectangular, 90 × 90 mm, 6 mm tall (stacked)

How to print it

Print each layer separately. Every layer lifts off and goes back in any of four turns; change the order to reset the puzzle.

Prints as shown on its floor, no supports. Stacked parts are fused into one print.

Filament: at most about 109 g of PLA printed solid (roughly $2.19 at $20 per kg); normal infill uses less.

To get the files, open it in the generator and choose File › Download STL (one file per part) or Download 3MF (every part on one plate).

Questions

What size is the alignment-puzzle money box model?

The alignment-puzzle money box model measures 90 × 90 × 50 mm (width × depth × height). That is Base A; 4 more bases are built on. You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. Print each layer separately. Every layer lifts off and goes back in any of four turns; change the order to reset the puzzle. Prints as shown on its floor, no supports. Stacked parts are fused into one print.

How much filament does it use?

At most about 109 g of PLA (88.1 cm³ printed solid), roughly $2.19 of filament at $20 per kg. Normal infill uses less.

Can I change it?

Yes. Open it in the SO3D.xyz generator (free, in your browser), change the size, walls, dividers, holes, text or anything else, then download it as STL or 3MF for your slicer.

More kids & play

Leaky stacking pour cups

Explore flow and draining in bath play

Simple (set)

Sound-matching shaker pairs

Train listening by matching shaker sounds

Multi-part assembly

Paper-plane rubber-band launcher

Launch paper aeroplanes with a rubber band

Build snow forts with even bricks

Simple

Archaeology dig grid box

Excavate buried finds square by square on a string grid, like a real dig

Medium

Scytale cipher tube

Send secret messages that only a tube of exactly the same width can read

Multi-part assembly

Vortex air cannon

Fire invisible rings of air across a room to knock over paper cups

Simple

See all 86 in Kids & play

Make it fit your space

Change the size, walls, dividers, holes and labels of the alignment-puzzle money box model in your browser, then download it for your printer. Free, no CAD needed.

Customize this model