Piano Music Box 1:12 with Chair

Modell

I made a piano with a Kikkerland Musicbox for my big girls godchild.

The challenge was to create a realistic keyboard and not a flat or even glued-on one like you find on many other toy pianos. But on the other hand, the music box again had to be sturdy enough for a child to play with. I think I found a good way.

If you want to build the piano also as a music box, you can find Kikkerland music boxes cheap in many online stores with different music pieces, such as “Happy Birthday”, “Somewhere over the rainbow”, etc. The music box already comes with screws for mounting.  It is only important that you remove the supplied wooden plate and screw the music box directly to the back panel. If you don't want to build a music box piano, you can find two more STL files in the files with the addition "without music box" for the two parts you just have to replace: The back panel and the right side panel.

In the files you will find two versions of the piano. One that is a little more robust (version 1) so that younger children can also play with it. (To avoid tears). The second version has detailed pedals and looks more realistic. However, the pedals are also more delicate. 

As always you can find the FreeCad projects in the files. 
Feel free to design your own piano.

Print 

Print the keyboard at 0.16mm layer height. All other pars can be printed with 0.20mm layer height. A 0.4 nozzle is sufficent for the modell  and in my first print, the result was great. You can of course print a more detailed keyboard with a finer nozzle.

You'll need no supports for printing. 

Assembly 

You can use superglue for easier assembly, depending on how detailed you print the parts. The parts hold together without glue, but if a child is going to use it, glue it together, otherwise it will be in pieces again faster than you would like.  I messed up a bit when printing, so I had to rework one or the other edge with a knife. 

The chair does not need to be assembled ;)

Here is a step by step guide for assembly:
You can also find the instructions as PDF in the files.

Update 2023/09/29

The knob of the music box has some tolerance in the size, so that it does not always fit through the hole, so I widened the hole by 0.4 mm. 

Update 2023/11/18

@JacksonPage_1108097 asked for a model with more realistic foot pedals for his niece, so I added second version of the piano to the files. The pedals can be printed in a separate color (e.g. silver)