Luba 2 - 5 Blade Cutting Discs and Blade Protector

After trying different models that I downloaded and printed I wasn't satisfied with the performance, weight, and geometry of anything I downloaded.  I decided to  design my own (Let's face it, the design is mostly circle so how hard could it be -  that's what I thought) The goal was to create a disc that was about the same weight as the original discs with 4 blades and no blade protectors and create a discs that cuts better and where the blades are protected and can rotate freely without getting clogged with grass.  After multiple iterations and months of testing on my own Luba 2 mower I settled on what you see here (Printed out of PCTG). I am working on a more robust version that I may end up selling at my ETSY shop.  As always, if you have any suggestions on how to improve the model let me know.