We have a malamute and the stock roller would get plugged very quickly. I designed this to use wiper blades to stop the roller from getting plugged. Different wiper blades have different lengths if they are too long they will hit the floor causing it to bounce. I am not sure what ones i have in mine since they were just old ones i had laying around. I used petg to print mine but i imagine any other filaments would work as well.
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