Today's postings
- [Baren 27997] Blade Grinding ("Love Me")
Message 1
From: "Love Me"
Date: Sat, 14 May 2005 01:59:16 +1000
Subject: [Baren 27997] Blade Grinding
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Robin asks about grinding back the blade of the Hangi-to to make it work a little easier. I have a Tormek wet ginding wheel
which makes tool sharpening a breeze. Because it is slow and wet, the wheel wont overheat the delicate laminated steel of
the Japanese tools. I can do no better than give you a direct quote from Mike about how to grind back the blade:
"Make the blade thinner... like... if the steel blade measures 3" long x 1/4" wide x 1/20" thick, grind away the soft
face so it is thinner -- more like 1/30" or 1/40" thick for about 1/2" or so of its 3" length at the cutting end -- sharpen
to the usual skew angle and bevel -- a bit more acute for softer woods is OK and a bit more obtuse for harder woods... if the
skew angle or edge bevel are too acute, then the hard tip will snap off too easily as you turn the blade -- so that's always the
trade off -- if not for breakage, you'd want as acute an angle everywhere as you could make... "
At worst, you will loose 1/2" of your blade, it is really worth experimenting.
Tom
which makes tool sharpening a breeze. Because it is slow and wet, the wheel wont overheat the delicate laminated steel of
the Japanese tools. I can do no better than give you a direct quote from Mike about how to grind back the blade:
"Make the blade thinner... like... if the steel blade measures 3" long x 1/4" wide x 1/20" thick, grind away the soft
face so it is thinner -- more like 1/30" or 1/40" thick for about 1/2" or so of its 3" length at the cutting end -- sharpen
to the usual skew angle and bevel -- a bit more acute for softer woods is OK and a bit more obtuse for harder woods... if the
skew angle or edge bevel are too acute, then the hard tip will snap off too easily as you turn the blade -- so that's always the
trade off -- if not for breakage, you'd want as acute an angle everywhere as you could make... "
At worst, you will loose 1/2" of your blade, it is really worth experimenting.
Tom