Montessori style block sorting stacking box

Stacking Shape Puzzles for Toddlers

This is a simple block, puzzle, sorting box inspired by the model provided by Chileo's "Montessori geometetric sorting puzzle - square" that:

• Has 4 stacking boxes
• Has 10 total pieces (1 whole, 2 halves, 3 thirds and 4 quarters)
• The pieces are large to avoid becoming a choking hazard
• Some pieces will mix and either fill (1 half and 2 quarters) or nearly fill (1 third and 2 quarters or 1 third and 1 half).
• The pieces are flat with a "lift hole" cut into each piece. This allows the 4 containing boxes to stack neatly and avoids the risk of a knob breaking off.
• Since the pieces are flat, all the same thickness and most dimensions are a multiple of 50 mm, they can also be used as a nice small set of building blocks.
• Since the pieces are flat, you can print them in two colors if you'd like to present more combinations or ways things can appear.
• Step files have been provided should you like to make your own pieces.

I'd recommend printing each piece in at least two colors so that your toddler has two choices on which color should show. The example shown is probably overkill. I have to admit it was a pain for me to go through all the color changes to get the black and white strip shown in the example. That being said, I am happy with the results. I mixed a Prusament PETG Galaxy black with some Sunlu PETG white shown in images. I have also used Atomic Cosmic Graphite PETG and Atomic Bright White Opaque PETG and prefer the opaque white over Sunlu's more translucent white in the final product. That being said, the model is designed to print cleanly without supports, so you should be free to use any material that your are comfortable with.

The original model was done in as two parts in Fusion 360, be aware of the following if you would like to make changes:

• Many of the dimensions are controlled via parameters (use Modify -> Change Parameters to adjust)
• There are only two bodies defined, you will need to hide/unhide the part you want to adjust
• To make a different sized piece, modify a parameter. For example, to make a narrow piece that is full length in one direction and 1/3 the length in the other, set the PieceHeight value to MaxPieceWidth / 3.