Stylized Predator mask with screw-in, articulating hair strands and space for LEDs. For more Predator and Alien content, check out Facehugger Mask, Stomach Buster Can Holder, and Razor Whip.
I recommend printing the head band first. This will give you a rough estimate of how the mask will fit as a whole. Scaling up/down is limited due to the threaded hair strands. Scaling up might require a bit of glue once they're screwed in. The nut beneath the threads can assist tight screwing if the mask is scaled down.
The head band snaps into the front of the mask fairly well which allows you to wear the mask without the back piece. If using the back piece (requires 8mm diameter magnets), the head band should fit inside but is not required.
Glue is required for the visor. The top of the mask fits to the front of the mask fairly snug without glue, but a bit a glue might be required for a firm grip. For the LED holder, I managed a pretty firm grip by orienting a zip tie just right. A bit of glue would be required here as well for a permanent grip.
For those with LED wiring questions, I connected the LEDs as shown in the following diagram. The positive terminal (red wire) of two AA batteries (3V) is wired in series with an on/off switch. LEDs with their accompanying resistors are then wired in parallel. Just remember that the anode (long leg) of an LED must be connected to the positive (red) side of the of the circuit while the cathode (short leg) connects to the negative (black) side of the circuit. Resistors can be wired in either orientation.
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