I repaired a Worx WG650 snow thrower that had a couple broken paddles. I used some replacement paddles for a different brand of snow thrower and modified them to fit. 

The video of that process can be seen here: Worx snowblower paddle repair

After the repair, I noticed that the original paddle has a TPU mark on it, so I thought it may be worthwhile to model it in case it would be beneficial for someone.

I have not printed or tested a printed version of this; I'm just providing the model that was created by measuring one of the used paddles I removed from the unit I repaired.