DISCLAIMER: The amazing video series featured on these pages of my website was published on YouTube by Trace Study. These videos feature prof. Kenji Komatsu from Toyama University teaching about the setting and maintenance of a Japanese plane (kanna). I do not own, nor I claim, any rights on these videos - all copyrights are owned by the respective owners.
Below I have posted a non-literal English translation that I have made,
with my wife's help, to better understand prof. Komatsu's teachings.
I am publishing these translation for the sole purpose of sharing it
with the woodworking community, hoping that this can be of help
for other people as well. If you know of any ways to improve this translation,
please let me know. Any contribution will be of great help to the whole community.
In this first video prof. Komatsu teaches about the preparation and maintenance of a Japanese plane blade performing uradashi
In the second video of this series, prof. Komatsu shows some examples of what happens when a blade is sharpened improperly without performing uradashi
In the third video of this series, prof. Komatsu shows how to use abrasive powders on a flat steel plate instead of diamond plates
In the fourth video of this series, prof. Komatsu shows the function of uragane (the chip breaker) in avoiding tear out and how to set it.
In the fifth video of this series, prof. Komatsu shows how to sharpen the uragane (chip breaker) and how to adjust it to fit the blade
In the sixth video of this series, prof. Komatsu explains how to prepare the bottom of the kanna.
In the seventh video of this series, prof. Komatsu shows how to maintain the straight edge (shita-ba jougi) used to check the bottom (shita-ba) of a dai.
In the last video of this series, prof. Komatsu gives a few important check points to follow to avoid some common issues with hira-kanna setup and maintenance.