Paul Simmel
03-29-2007, 11:06 PM
My jointer knives are 8” and my planer knives are 15”… HSS.
Other than something like this:
http://www.amazon.com/Makita-G2017-Blade-Sharpener/dp/B0000E6TE6
How do you sharpen jointer and planer knives? I have no problem honing a sharp enough edge by hand with stones, but I can not get nicks out that way.
I ordered this:
http://www.leevalley.com/wood/page.aspx?c=2&p=33025&cat=1,43072,43071&ap=1
Anyone do anything like this? (scroll down to the jig pictures)
http://www.woodworkslive.com/index.php?topic=2658.0
Or this?
From:
http://groups.google.com/group/rec.woodworking/browse_thread/thread/fc97aa71f6966f24/c4dcde89739f71a0?lnk=st&q=planer+knife+sharpening+jigs&rnum=2&hl=en#c4dcde89739f71a0
…I install a grinding wheel in place of a blade... I cut a slot in a
piece of plywood to match the width of the wheel (I usually use 1/2"
thick plywood) cut to the size of the tablesaw top... with the wheel
raised up through the saw slot I clamp the ply in place... I then take
a wooden straight edge and fasten it perpendicular to the grinding
wheel (I usually tack the straight edge to the plywood with 4d nails
and leave them grinning) and space it so the planer/jointer knife just
touches the wheel... two adjustments come into play at this point: the
height of the wheel and the position of the straight edge.. working
the two together you can match the angle of the bevel on the knife
edge... by using a light touch and continually moving the knife back
and forth across the wheel you can successfully manage a hollow ground
shape on the cutting edge of the planer/jointer knife... Dont get in a
hurry... I always keep a coffe can full of cold water to cool the
knife that I am griding so as not to burn the metal... If you feel the
knife starting to get warm dunk it in the water... a burn mark will
change the temper of the metal (which is something you dont want)...
go through all the knives that you have for a particular machine
before moving to another set of knives .. they will all be the same
width and parallel... once I have finished grinding them I use
sharpening stones to sharpen them before reinstalling... hope this
helps... ablegable…
Other than something like this:
http://www.amazon.com/Makita-G2017-Blade-Sharpener/dp/B0000E6TE6
How do you sharpen jointer and planer knives? I have no problem honing a sharp enough edge by hand with stones, but I can not get nicks out that way.
I ordered this:
http://www.leevalley.com/wood/page.aspx?c=2&p=33025&cat=1,43072,43071&ap=1
Anyone do anything like this? (scroll down to the jig pictures)
http://www.woodworkslive.com/index.php?topic=2658.0
Or this?
From:
http://groups.google.com/group/rec.woodworking/browse_thread/thread/fc97aa71f6966f24/c4dcde89739f71a0?lnk=st&q=planer+knife+sharpening+jigs&rnum=2&hl=en#c4dcde89739f71a0
…I install a grinding wheel in place of a blade... I cut a slot in a
piece of plywood to match the width of the wheel (I usually use 1/2"
thick plywood) cut to the size of the tablesaw top... with the wheel
raised up through the saw slot I clamp the ply in place... I then take
a wooden straight edge and fasten it perpendicular to the grinding
wheel (I usually tack the straight edge to the plywood with 4d nails
and leave them grinning) and space it so the planer/jointer knife just
touches the wheel... two adjustments come into play at this point: the
height of the wheel and the position of the straight edge.. working
the two together you can match the angle of the bevel on the knife
edge... by using a light touch and continually moving the knife back
and forth across the wheel you can successfully manage a hollow ground
shape on the cutting edge of the planer/jointer knife... Dont get in a
hurry... I always keep a coffe can full of cold water to cool the
knife that I am griding so as not to burn the metal... If you feel the
knife starting to get warm dunk it in the water... a burn mark will
change the temper of the metal (which is something you dont want)...
go through all the knives that you have for a particular machine
before moving to another set of knives .. they will all be the same
width and parallel... once I have finished grinding them I use
sharpening stones to sharpen them before reinstalling... hope this
helps... ablegable…