Paul,
I still am instructing. We have very specific protocol’s, approved by the local authorities, at my glider club(s). I wear a mask and we wipe down all the surfaces before and after flight. In my personal glider I fly without the mask.
By the way, I mentioned wanting to use the MPCNC to do glider panels. Here’s a picture of my panel, which was done on my buddy’s CNC:
If you want to learn more about my panel we can start a thread on the Off-Topic sub-forum.
Mike