Re-Visit Cap Iron Video

[Jim Koepke]

This video seems to pop up in different places over time > https://giantcypress.net/post/231595...deo-created-by

This is the full version of the video created by Professor Yasunori Kawai and Honorary Professor Chutaro Kato at Yamagata University, as part of their research in the role of chipbreakers, which they call cap irons, in planing.

There are also a few links at the top of the page others might find of interest:

Japanese chisel setup Japanese plane setup Japanese saw sharpening Building a Roubo workbench

When watching the video, watch what takes place behind the cutting. This is why planes need to have a clearance angle behind the edge. It is most pronounced during the segment where no chip breaker is used planing against the grain.

jtk