Hi all,
I have a very small non- branded jointer. It has three blades and,
according to the math, makes about 12 - 13,000 cuts per minute.
It works fine but on occasion will leave very tiny scoop marks, one
right after the other. Particularly in softwood.
Would that be a sign that the blades are getting dull ?
If so does anyone know of an inexpensive source for replacements? They
are single edged and measure 4 1/8" X 1 1/4" X 1/16".
Thanks much,
Perk
--
Note --- My real email is perkatwavecabledotcom
Perk wrote:
> Hi all,
>
> I have a very small non- branded jointer. It has three blades and,
> according to the math, makes about 12 - 13,000 cuts per minute.
>
> It works fine but on occasion will leave very tiny scoop marks, one
> right after the other. Particularly in softwood.
>
> Would that be a sign that the blades are getting dull ?
>
> If so does anyone know of an inexpensive source for replacements? They
> are single edged and measure 4 1/8" X 1 1/4" X 1/16".
>
Try slowing your feed rate, and use sharp knives? Tom
Perk wrote:
> I don't if they're available but the cutter head has three knives on
it.
>
> Perk (:>)
Huh? Forgive me, but I don't understand what you've written (except
the part about the three-knife cutterhead). Do you mean you don't_
know_ if they're available? A decent sharpening service should be able
to make some for you, or at least aquaint you with someone who can. Tom
"Perk" <[email protected]> wrote in message
news:[email protected]...
> Hi all,
>
> I have a very small non- branded jointer. It has three blades and,
> according to the math, makes about 12 - 13,000 cuts per minute.
>
> It works fine but on occasion will leave very tiny scoop marks, one right
> after the other. Particularly in softwood.
>
> Would that be a sign that the blades are getting dull ?
>
> If so does anyone know of an inexpensive source for replacements? They
> are single edged and measure 4 1/8" X 1 1/4" X 1/16".
>
> Thanks much,
>
> Perk
>
> --
> Note --- My real email is perkatwavecabledotcom
>
Three things to check:
Blades for sharpness and or nicks. (replace or re-sharpen)
Belt slipping, causing the cutter head to spin to slowly during jointing.
Motor - You say its and old - no-name, maybe the motor is warn and again
causing the cutter head to spin to slow.
Dave
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"Perk" <[email protected]> wrote in message
news:[email protected]...
> Hi all,
>
> I have a very small non- branded jointer. It has three blades and,
> according to the math, makes about 12 - 13,000 cuts per minute.
>
> It works fine but on occasion will leave very tiny scoop marks, one right
> after the other. Particularly in softwood.
>
> Would that be a sign that the blades are getting dull ?
>
> If so does anyone know of an inexpensive source for replacements? They
> are single edged and measure 4 1/8" X 1 1/4" X 1/16".
>
Mostly its a sign of fast feeding. Of course it sometimes conceals another
problem, that of a low knife. Equivalent of fast feeding.
Dull knives will have a greater tendency to skate rather than cut, so it
could indicate dull or dulling knives. Your ears should tell you whether or
not this is the case. One late sign is the smashing of fiber on the
scallops left on the wood.
Amazon or any other source should be able to fit knives for you. 4"
jointers are not uncommon even in this day of cheap machinery. Put in the
new set and send the old out for sharpening, unless you've got quantities of
time or the proper jigs to do them yourself.