Helicopter toy
thingiverse
https://www.thingiverse.com/thing:4800478 Toy helicopter to play with the world of wooden trains. Possibility of rotor with 3 and 4 blades. You will need small lag screws for the fastening of the rotors. Apparently if you try to download them all at once thingiverse sends you to a 404 page but it works if you download the files one by one.
Download Model from thingiverse
With this file you will be able to print Helicopter toy with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Helicopter toy.