Sharpening a shovel blade improves trenching
https://www.instapaper.com/read/2050602565
Sharpening a shovel blade improves trenching. Maintain a consistent angle, sharpen both edges if needed, and deburr to reduce resistance.
Sharpening a shovel blade improves trenching. Maintain a consistent angle, sharpen both edges if needed, and deburr to reduce resistance.