Macgran43 have looked at your son's website and what I've seen are super!
I have some disposable ones I've had for a long time, but intend to make any others then find washable filters to use in them. Think the pockets you are all finding in your masks are for filters.
Bumboseat1 sympathise with your overlocker problem - can the instruction book help? or Support on-line?
I just have a plain computerised machine, it does overlocking stitch, but I have to cut it!!
Neighbour moving without telling me .


