Pawx: Toddler Jet Pack!

thingiverse

It's hollow so you'll only need infill if adding single extrusion infill is essential. This model may be too large for some hobby 3D printers. Supports will be necessary. The screw washer is optional, and any M3X10 or M3X13 will work with the washer in place. Alternatively, choose shorter screws if you don't use the washer. Print strap clips on their side (see image). Print wings, main jets, nozzle, and caps vertically. You can utilize any strap; I used a black lanyard that was long enough after cutting. Hot glue will suffice to fasten the nozzle and cap; I opted for liquid electrical tape instead, as it was all I had available. When scaling, ensure tolerances don't become compromised.