I just saw this… this is what I do and you could definitely do this with your template.
Making acrylic templates, using rotary cutters and FILTI face mask material
This has worked VERY well for me and I bought the zig zag Olfa blade so that the fabric doesn’t ravel. It really does make it quick to cut out fabric.
@ryancolts1988 I would recommend using something that is apt to block a lot more particles than a towel. You can make a lot of mask inserts with this filter (the company’s background is in home filtration but adapted their business for the pandemic and made face mask material).
I apologize … I thought I posted this a month ago and just got back on the tablet I use only occasionally and apparently I got interrupted and didn’t post.
Go to their website and read the specs on their material, it really is much better than a towel in filtering out particles.
We also use the nose bridge from a US veteran owned company and absolutely LOVE them. They show adding them to the outside of the mask (which you can) but I make a little pocket and sew it inside and it washes great (no rusting). Metal Nose Forms/Bridges which is great for those that wear glasses or just so it can fit your face better.
If you have any questions, let me know! I would prefer my filters not to get dirty (by having dust or whatever blow over them in the GF) … fast and easy to cut with a rolling (plain) OLFA blade and cutter.