Armadillo PAP Finder

Highly recommend using an SLA printer (resin printer) for this. Can be printed on FDM with clear filament but it won't be as translucent nor will it have the same quality as the pics shown above.

I printed my own on an Anycubic Mono X using Siraya Tech Blu Clear V2 resin.

For people who print this in resin: The part will look perfectly clear coming off the printer but it will cloud considerably once you wash it with IPA. Post cure it for around 2 minutes to prevent the part from yellowing too much. To make it clear again, spray it with a UV resistant clear coat. 2 to 3 layers should be enough.