Starting on the teeth - these are at the "plastic booger" stage and are mashed out of mouldphorm plastic. Need to reheat them to form them into their final shape.

Jaw test at about 6bar or 90psi air pressure. I think it needs a flow regulator x.x

Now with the cable gland holes done, it's on to the final two horns - this pattern is made from a fence wire skeleton filled with modelling foam and low-melt plastic and will be removed once a fibreglass shell has been built over it.

Inside view showing the bolts poking through 6/7

Glands are in! They weren't used to cast the threads themselves, as the threads are too short, and would likely have broken when being removed. 5/7

Once cured, the screws and washers can be removed, and the back side tidied using a die grinder. A chisel and a file were used to remove a few burrs from the front side.

Then set the screws using blobs of plasticine to hold them in place. The putty was made from laminating resin with fumed silica as a thickener, and milled carbon fibre as a strengthener, so the hardened putty can hold a thread. 3/7

First, apply wax to steel fasteners with the same thread as the glands, in this case M12x1.5 - the wax prevents the epoxy from adhering to the threads. Also pictured are four polypropylene washers to create a flat outside surface. Regular steel washers can be used if waxed as well.

Headphone amp, repo here if you want to make your own: github.com/CyberHooves/...

I AM NOT BIG SMART

Remember, this is the stage in your project you check whether you've used the correct footprints.

Roughing in the fans - 40mm in the snout to defog the visor, and a 92mm at the back to keep my head cool.

Got the jaw working - fully open vs. fully closed

Each fan has eight wires. The colour code may vary, but for these (from HP proliant DL360 G6/7 servers) it is:
Black/grey: GND
Red/orange: +12V
White/yellow: PWM speed control
Blue/green: tachometer signals

Leave the PWM and tachometer wires unconnected if not used. 2/2

If you need small powerful fans, these server fan modules are about £5 second hand. You get 2x 40mm dual-series fans after dismantling one. Pinout in thread 1/2

Lab or retort stands are good for holding awkward objects. Also fursuit head wip