How hard would it be to make an effective manual lawn mower (no fuel, no electricity, can cut grass of any length)? What about four wheels instead of two, and horizontal blades
![CAMBA Moova Hand Truck; Folding Cart and Dolly; Stair Climbing Wheel Technology; Heavy Duty 220lbs Load Capacity CAMBA Moova Hand Truck; Folding Cart and Dolly; Stair Climbing Wheel Technology; Heavy Duty 220lbs Load Capacity](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/71AclcQxgTL.jpg)
CAMBA Moova Hand Truck; Folding Cart and Dolly; Stair Climbing Wheel Technology; Heavy Duty 220lbs Load Capacity
![Amazon.com: WORX Landroid M 20V Power Share Robotic Lawn Mower 1/4 Acre / 10,890 Sq.Ft Power Share- WR140(Battery & Charger Included) : Everything Else Amazon.com: WORX Landroid M 20V Power Share Robotic Lawn Mower 1/4 Acre / 10,890 Sq.Ft Power Share- WR140(Battery & Charger Included) : Everything Else](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/513WtpRGFnL.jpg)