Iron Lung Bucket (Color Separated)

This can be printed on any machine for a multicolor finish. The pieces are properly resized. 

The inner section looks and is a bit ugly to print because of thin walls and holes, but I figured its okay since it will be unseen. It is also hollowed out more to save filament.

The inner section slides in from the top and is pretty secure by itself. I reinforced it with a 3D printer pen.

The biggest struggle was the teeth. For printing, slow it down to 30mm/s and accel to 500mm/s2. If you're still having trouble, add brims. I used a 3D printer pen to secure them. It came out somewhat messy. You can probably use a soldering iron as well.