How to wear woodworking planer grinding sharper?
First rough grinding, after grinding in strong light place, until you see a small blade on the edge of the knife, and then fine grinding grinding.
Explain the grindstone grindstone (double side side coarse fine) hold the knife down, with a grindstone opposite rough planer knife into section 40 degrees, parallel to pull back and forth (planer and stone 30);
Look at the edge of the knife, there is no sand on the line. Or scrape it on your hands. If it feels fluffy, it's successful; if it feels slippery, you must grind it again. Use the negative side to slow down.
