This is a head-base that can be used to build a puppet-, plushie-, robot- or a fursuit-head (costume). I did not add ventilation holes, because I want to make it easier to cover the head with thin stretch material. The lower jaw is movable.
The model is scaled for costume size (it's about 4cm wider when my own head - I have a small head) - rescale it if you need to. I recommend making the head at least 25cm wide for costume use. The current size is for larger heads.