I 3d printed a couple of mow/mulching discs for my M1. Experimenting 
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I wonder if you put a twist on the center supports if you could get some lift for the grass?
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I sloped the struts and inner disc surfaces upward toward the mower base, with that in mind. Clockwise rotation should, theoretically, lift leaves and grass upward into the blades. At the very least create vortexes.
I have noticed that less debris is trapped under the disc.
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after mulching through eight inches of thick maple leaves. The mower is clear of any debris. Very surprising!
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Cool idea. You could even try ABS which should be even more durable.
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I had lots of PETG but yes abs would be more durable.
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The file is on thingiverse under Yarbo.
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Here is the link for convenience.
Thanks for sharing the file!
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So…. spill the beans!
How was the mulch quality!!
Nice work on this!
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My tractor would mulch the leaves virtually out of sight. These blades create very small pieces but, I think, because the M1 cannot throw the particles they collect where thickest.
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Where is the sloped version ? I think, as suggested, if the center bars have little twist, this may create some lift.
Thanks for your suggestion. I think I understand what you’re saying. I used a very simple CAD program that isn’t very useful for complex geometries. The idea was to create an airfoil but keep it strong. The struts have a slight slope. In my mind this might create lift but at the least would create turbulence.
I would love to see an image of your suggestion. Maybe it is possible with my limited CAD resources.
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Open a free account with OnShape.
It has a learning curve but it can easily do this. It’s cloud based so you can be up and running in a matter of minutes and don’t have to maintain the software. The caveat for the free version is all your CAD files become open source if that matters to you.
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Lol. I’m 68 years old. My learning curve is very very long
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You’re 68 and you’re 3D modeling and 3D printing. You’re killin it!
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Thanks. During COVID I built a 5ftx5ftx7ft 3d printer and taught myself machine language. Just your average Canadian
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And my wife divorced me lol 
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Just kidding but it did cost me a very expensive quilting machine 
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