3M 6878 spectacle kit for Full Facepiece Respirators 6000 Series

I bought a 3M 6000 series full face respirator. It's great, but obviously not compatible with my spectacles. So I looked for the spectacle kit that I was sure would exist…
http://web.archive.org/web/20201202214246/https://www.winc.com.au/main-catalogue-productdetail/3m-6878-spectacle-kit/25042148
A$243.00 ?!

And it's just a bent piece of wire and a couple of injection moulded parts. Total manufactured cost couldn't be north of $5.
Hunting around I could get it for A$180… but that's still crazy.

So — here 'tis. My first draft 3M 6000 series spectacle kit. I removed the arms from an old pair of glasses and attached them with a zip tie.

Source OpenSCAD file attached, because always include your sources.

Print Settings

Printer Brand: Prusa

Printer: I3 MK3S

Rafts: No

Supports: No

Resolution: 0.2

Infill: 100%

Filament: Aurarum PETG Natural 

Notes: 

Print resolution could be coarser, but it's only a ~30m print. There's a mild overhang in the lower key details, but even printing this into fresh air it comes out just fine.

OpenSCAD dependency: https://github.com/revarbat/BOSL2/