make the mask remix

grabcad

I updated the mask design from makethemasks.com with some key changes. The company has since modified their filter retainer setup. I added a lip to enhance sealing performance, especially on my face. Additionally, I implemented a custom filter retainer concept, simplified the models for easier modification, and attempted to minimize weight. Please note that these modifications haven't undergone rigorous testing like the original design. I'm receptive to feedback and suggestions.