Moñeco - Human Anatomy Puzzle and Toy Doll

Why not learning science while playing with it! We are gonna make through Tinkercad and 3D printing an useful and ready-to-play toy doll which you can use to teach basic human anatomy to those children interested in the subject. It will have rotatory limbs and removable interior puzzle divided in bones, muscles and organs (all of them named).

And you can try to make it ecofriendly by using recycled fillament!

Here is the link to the Tinkercad project: https://www.tinkercad.com/things/kMu5J1oCMwt

Sketch material: Paper, pencil, rubber, sharperner...

Digital material: TinkerCad, Adobe Illustrator (or another program which let you export in .svg)

3D Printing Material: 3D Printer, PLA (filament).

Painting: Primer coating of paint, paint, varnish/emanel

Grab a paper and sketch different characters with diverse body frames. Then choose one and develop it, give it more details, choose where do you want to put the joints and draw the internal layers: organs, muscles, bones... organizing the avalailable space as well as you want without interfering too much with the joints.

With the finished detailed sketches of the different layers, take some photos of them and then digitize them in a software that can later export them into .svg so that you can import them into TinkerCad, whether it's Adobe Illustrator or an online one (example: https://www.pngtosvg.com/), although I recommend Adobe. Remember to take into account and offset the contours of our character to make "walls" where our puzzles are going to be.

Tips when modelling:

+Adjust the workspace size to 1000x500mm

+Take advantage of transparency mode in the solid option to watch through layers

+Use the show/hide option (CTRL+H) when you need

+Make several copies (CTRL+D) and save the changes you make in case something goes wrong

+Use different colors to classify the pieces so that you don´t get confused

+Place a ruler at the beginning on the work plane to take accurate measurements.

In case you don´t have time to make your own character download the .svg files down below. Then import them one by one into TinkerCad (use colors for each category of pieces to tidy the scene).

Place the pieces, duplicate them and mirror them to complete the other half.

There are a lot different pieces, so lets organize them by giving them thickness:

5mm thick to all the pieces named Base Int and Layer 1 Organs, Layer 2 Organs 2 Separated, Layer 2 Organs 2, Layer 3 Bones and Layer 4 Muscles.

4mm thick to all the pieces named Outline Int, Base Ext Up, Base Ext Down and Axis Join

24mm thick to all the pieces named Outline Ext and Axis

And height:

28mm high to all the pieces named Base Ext Up

24mm high to all the pieces named Outline Int and Axis Join

19mm high to all the pieces named Layer 4 Muscles and Base Int

14mm high to all the pieces named Layer 3 Bones and Base Int

9mm high to all the pieces named Layer 2 Organs 2 Separated, Layer 2 Organs 2 and Base Int

4mm high to all the pieces named Outline Ext, Axis, Layer 1 Organs and Base Int

0mm high to all the pieces named Base Ext Down

If you did it everything correctly it should look something like this!

Once the different sets of puzzle pieces and the layers are overlapping each other you can make a copy of the puzzle pieces, move it away, turn the original to empty and group it with the overlapping layer to get the holes.

Place all the layers (the ones with the holes and the puzzle pieces along with the bottom and top covers, one on top of the other), then select all the cylindrical joints, make them empty and duplicate and group them with each layer so that at the end you get a hole going through all of them (except the covers). Keep one version of the joints as solid objects to use it in the next step.

Group the walls of the body pieces to the bottom bases and the higher small inserts to the top bases so that the last ones fit into the first ones.

Let´s set the real heights for each part of the body so that they can rotate and wouldn´t collapse when building it:

Body: 8mm high

Arms:12mm high

Forearms: 8mm high

Upper legs: 4mm high

Lower legs: 0mm high

Group the cylindrical joints with its respective bottom cover piece. Group the solid circles used to assembly the joints of the bottom parts with its respective top cover.

Lets write on the back of the puzzle pieces the name of each muscle, bone, organ... with the text tool, then making it empty and grouping it with the pieces.

Let´s also add some texture to the muscle and organs pieces. Look for the Brickwall script in the shape generator window, grab it and create a wall with elongated bricks and another one with more organic and curved bricks that will mimic the muscle and organs tissues. Make them as big as you can while keeping the bricks small. Duplicate it (CTRL+D) several times to cover the entire set of pieces. Group them, set it to empty, place a cube as large as the texture above it and group it. Set it again to empty and place it on top of the set of pieces, then group it and the pieces should have the texture.

Place the different pieces alone by themselves and export them as .stl so that you can 3D print it later. Make sure they are not touching each other.

Here there are they definitive .stl files!

*Adjust tolerances and offsets according to the 3D printer and your own preferences.

Prepare the .stl file for 3D printing according to the setting of your 3D printing, I would have to use settings like:

Printing temperature: 204ºC

Retraction speed: 25mm/s

Retraction distance: 2mm/s

Material: White PLA, 0.12mm

Support structure: Minimum, trying to place the pieces as horizontal as it is possible.

Then paint the pieces according to the sketches you make at the beginning and ad some emanel to them so that they are shinier and more durable. And voilà, that's your finished toy! You can start learning some science!