After about 15 years of use, I finally hit an embedded
screw in a used piece of wood in my jointer. It put a 1/32
nick in the knives that affects the plane profile. Are
these blades ruined? Is it worth it to get them sharpened
or should I just buy some new ones?
You haven't sharpened them in 15 years???!!!
Depends on what they are and what size. A 1/32" is pretty deep if it is
that deep, not wide, but if they're a full profile knife there may be
enough remaining width to grind them that much. You'll have to measure
that and see if you'll have enough to meet the minimum width when done.
If they're solid carbide, they'll be worth it in terms of replacement
cost. HSS isn't too expensive if they're 4-6", 8" starts to add up, but
still not too bad...
You can, of course, simply hone/sharpen them to a new edge and forget
the knick and offset them slightly to disguise the damage as a "cheap 'n
cheery" workaround solution. That means, of course, that using the
rabbeting function is out, but not many really do in my observation...
Are you saying you haven't sharpened them in 15 years, or it's the first
time you've hit something embedded? I hope it's the latter ;-).
If it's a small (narrow) nick, try offsetting the knives a little bit. That
way, one knife won't cut where the nick is, but the next knife will.
Failing that, at least try to get them sharpened. The worst that will
happen is they will tell you they can't be salvaged and you don't have to
That's a really good idea to offset the knives. Thanks for the
great advise. Yeah, the guy where sharpens for something like
50 cents an inch. But I was curious if these kinds of accidents
meant the end of the blade. Thanks again.
You can sharpen them yourself with my jig in less time it takes you to drive
to the sharpener. Plus, I am willing to bet that you can get them sharper
than the professional. But since you haven't sharpened them in 15 years,
you might not appreciate the difference. :-)
See my jig section:
of course it won't take that long but it would not be fast either. I
know how long it takes to remove metal with sandpaper. I Have used
hundreds of sanding belts doing that job.
but I do know there is a change of uneven sharpening when you have
to remove that much metal if your doing it with hand pressure and
So what is your point Steve? I should not suggest that he sharpen his
blades himself because it might take longer? Actually I REALLY doubt that
it would. I could take that nick out in no time at all (6" jointer knife
with a micro bevel) and achieve superior results to a "sharpener/grinder".
Have you made my jig and tried it on a 6" jointer knife? I know you
wouldn't have much use for it because it can't sharpen a plane knife, but
try it before you cast judgment. You are assuming it will take a certain
amount of time to sharpen a jointer knife (most likely 6", although he
doesn't say) with a jig you never used.
How often have you think folks take blades in to get sharpened and even get
them back in the same day?? The last time I took a set in, it took 2-weeks
and the "sharpener/Grinder" made my blades look like they were sharpened on
I could take that nick out in no time at all (6" jointer knife
I've glanced at this thread several times but just saw your recent
reply. I have a small knick in the blades of my Rigid jointer (my fault)
that I would like to remove. You mentioned a jig. Could you send me
plans for your jig - I'm sorry that I probably missed it in one of your
other replies. Any help would be appreciated.
Thanks! I think you will find a lot of uses for it. With all of the
garbage I see published in FWW magazines 'Methods of Work' section, I still
can't believe they rejected my tool.
If you find you use my alignment tool a lot you might want to look into the
TS-Aligner Jr which has more features.
I am saying that sharpening and grinding are two different things. it
is easy to goof up when grinding.
there are also good and poor sharpening services.
myself all I have to do is rotate a carbide cutter that is far
easier then your jig (G)
but for a bit before I dumped my cutter head I used my makita on
them. work ok but still not as fast as my carbide cutters.
I have a pretty good place 2 blocks from my shop. great for fixing a
broken bit or such fast. I never had any knives sharpened because I
dumped my planer knives. but myself I don't have the time to spend to
sharpen planer knives.
1/32" would not even count as a nick when grinding knives in my shop,
it would be removed in the normal course of sharpening at 60 cents per
I get knives that have 1/32" of dull rounded over edge all the time
through my drop off sites.
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