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Thread: Jointer/Planer knives 18%
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30th November 2005, 12:32 AM #1
The West is Best
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Jointer/Planer knives 18%
Guys,
I have what I believe is 18% tungsten jointer and thicknesser knives that was purchased at a reputable WW store in Perth. Without any markings on them, how would I tell the difference if they get mixed up with the standard knives?? Is there a way to tell the difference?
Regards
Les
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30th November 2005, 12:49 AM #2
Just some guy
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Probably not. Unless you put some machinist's blue or similar on the knife for reference.
The 18% Tungsten should be a tougher alloy and retain its edge a bit better
that normal HSS.
The blades that I use are available in HSS or Cobalt, but the Cobalt in this case is also a fractional part of the alloy. (Lasts 2-3 times longer than HSS)
Does this make sense? Its late.
Greg
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30th November 2005, 01:00 AM #3
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The 18% will dent the HSS...
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30th November 2005, 09:58 AM #4
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Dodgy brother
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Maybe different results with a file test, or (gently) with a spark test on the grinder)
Cheers................Sean
The beatings will continue until morale improves.
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30th November 2005, 10:20 AM #5
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Go with Harry's test...make sure you use the back edge though
Buz
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30th November 2005, 10:50 AM #6
Dissenting opinion
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Get a permanent marker pen and write $100 on the Tungsten rich ones, that'd make me remember.
Bodgy
"Is it not enough simply to be able to appreciate the beauty of the garden without it being necessary to believe that there are faeries at the bottom of it? " Douglas Adams
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3rd December 2005, 10:19 AM #7
The West is Best
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After speaking to one of the saw doctors, it seems the only way to tell is to first of all trust the packaging:eek: and the put some permanent marking on the blades. Although in my case the HSS are wider that the 18 % blades. I still reckon the factory should put a mark on them though.
Regards
Les
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