3x3x3 Puzzle Cube

Description:

For this assignment, we were tasked with creating an interlocking puzzle cube using Tinkercad. The cube must be made of 27 cubes, each cube being 10 cm³. The puzzle cube will consist of 5 pieces, each consisting of 4 to 6 cubes fused together. Only one of the pieces can be flat.

Process:

To start, change the snap grid on the bottom right of Tinkercad to be 1 mm. This will make it easier to tell if all the cubes making up a single piece are actually touching each other. Next, click and drag a cube onto the work plane. Then add the number of desired cubes to make up the first piece, either by dragging them onto the work plane or by using the duplicate button, the latter of which I found to be much easier. After that, align the cubes using the align tool so that they are touching and group them together with the group button.

From here on out, the process is the same making the 5 other pieces. I made the pieces directly onto each other to create the cube, but it is also possible to make the pieces individually. The latter method would require much more attention to detail, so I would recommend building the pieces on top of each other. When starting the next piece, change the first cube to a different color to easily distinguish it from the original piece. Then when adding more cubes, use the duplicate tool so that the new cubes will all be the same color.

Piece 2:

Piece 3:

Piece 4:

Piece 5:

After printing, most pieces are going to need some sanding using either a piece of sandpaper or a nail file to properly fit together. I filed the edges and corners of pieces that were not fitting properly using a nail file.

Print Settings:

Slicer: Cura 3.0

Layer Height: 0.2 mm

Infill Density: 20%

Support: Yes

Nozzle Size: 0.4 mm

Printing Temperature: 200°C

Bed Temperature: 60°C

Estimated Material: ∼15 g

Estimated Print Time: ∼100 minutes

Files for this print can be found here.

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