Pico 3 Neo Link (P3NL) halo
Description
This is a halo type face gasket for the Pico 3 Neo Link (P3NL). I took the idea from the Pico 4 GeekVR halo, which hasn't been produced for the P3NL. It gets your eyes as close to the lenses as is practical, which improves the field of view. The intent was to avoid having a full facial cushion, which I find hot and restrictive to my view. The compromise is that there is some wobble if moving your head fast. Not an issue for most games (sim racing, Alyx etc). For me, it gives a nice light feeling to the headset with minimal pressure points and sufficient light blocking without needing any additional pads. I added a couple of velcro pads so that I could then stick a face cushion from another headset inside the forehead area. It looks a bit silly because it has 'horns' sticking up, but you can probably find an alternative cushion if that bothers you. Previous iterations used magnets and pins to hold the gasket to the P3NL. But the magnets are necessarily small (so are weak) and tolerances become a real pain for printing and sticking the magnets in. So I decided to put nano tape (<£5 off ebay and useful for many things) on the sides and under the face pad support area. That holds it completely solid and can be removed without leaving any sticky marks. Two more pads are needed where the gasket rests on your cheeks. I used a bit of nano tape and some packing foam. More elegant pads would be nice, but these do the job. There is no adjustment here, so it's possible that different face shapes will experience it differently. Particularly where the pads rely on (gentle) pressure on the cheeks to make it sit comfortably. I've included the source Blend file, so you can adjust the curves, convert to a mesh and then boolean/union with the pad support parts. The pad supports required a fair bit of manual adjustment from the original curve surfaces, so if you want to make them taller to suit your face shape, for example, then you'll have to adjust the mesh. Straightforward if you can use Blender. I printed using PLA with tree supports and 60 degree overhang angle. That way there are only supports to the rim. I also used a brim, to help keep decent adhesion. 10% cubic infill is enough. I printed with 0.32mm layers so it looks a bit rough. You can reduce to 0.2mm to get a cleaner result, but it isn't necessary as your face doesn't touch the print directly anyway. Thanks to Pico for providing the face plate 3D model (included in the Blend file) which allowed me to follow the headset's geometry closely. Also thanks to the Pico Discord community, particularly GmoLargey.
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