Hand Tools Archive
still cutting but the edge is beginning to crumble. there are noticeable lines on the surface and the shavings are beginning to split a little bit. uniform across the width getting substantially worse as this 200 feet of planing was completed.
this is familiar from years ago when i tested a2 irons - there was a sudden loss of quality that rapidly appeared and then continued to get worse and worse.
these are the first lines that you an feel with a fingertip or fingernail.