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Simple & Quick Honing Jig for Jointer/Planer Knifes

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Project by Dan posted 02-19-2011 08:42 PM 3563 views 11 times favorited 7 comments Add to Favorites Watch

This jig is just something I came up with last night on the spur of the moment. Last week my dad let me move his Jointer/Planer combination machine to my shop and after using it for a short while I realized the blades were dull. I was in the middle of a project so I didn’t have time to do a lot of research on how to hone them or build a jig let alone send them off to get sharpened.

There was no micro bevel on the blades and the primary bevel looked good still. The first thing I did was to figure out what the current primary bevel was. Using my very helpful digital angle cube I was able to find the bevel angle very easily. The primary bevel on the knifes was 38.80. I wanted to make the jig so that I could hone a slight micro bevel in the blades.

I really had no plan as to how I was going to make this the idea was to just whip something together real quick so I could get the blades done asap. I started by ripping a piece of scrap with a 40 degree bevel. The idea was for the jig to let me hold the blade slightly higher then the primary bevel. Once the piece of scrap was cut I messed around with it a little trying to figure out how to use that scrap to hold the blade. I came up with the idea to cut a kerf in the scrap that would fit the blade and sit it down at a bevel just slightly higher then the primary.

I used the jig with the scary sharp method and just finished honing all 3 of my knifes. The jig is not perfect by any means but it did the job. The only set back is there is nothing but pressure to hold the blade in the block of wood. I plan on making a 2nd jig with some threaded inserts and set screws so that I can tighten them to hold the blade firmly in the jig.

Any feedback or advice would be great. Thanks for looking.

-- Dan - "Collector of Hand Planes"





7 comments so far

View BigTiny's profile

BigTiny

1664 posts in 1642 days


#1 posted 02-19-2011 09:18 PM

Regarding holding the blades in the jig, you might want to try just widening the kerf a bit at each end and making a couple of wedges.

-- The nicer the nice, the higher the price!

View John Stegall's profile

John Stegall

421 posts in 2270 days


#2 posted 02-19-2011 10:32 PM

The jig I use is similar to yours, but I do two blades at the same time. Think of the letter V with a flat bottom. I use a piece of wood cut at the same angles to hold the blades in place. This piece is about 1/4” thick and 1/2” wide. I did not bother to put threaded inserts in the base, just threaded the wood using a tap for threading metal. I got the idea from a guy with the nickname Dizzy. It has held up so well that I never bothered doing anything else and it removes the same amount of metal from each blade, but I only have two blades instead of three.

-- jstegall

View mafe's profile

mafe

9690 posts in 1843 days


#3 posted 02-19-2011 11:45 PM

Yes less is more, now it just needs wheels.
Great idea.
Best thoughts,
MaFe

-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View Roger's profile

Roger

15368 posts in 1558 days


#4 posted 02-20-2011 01:21 AM

saving money is a large plus for anyone with this hobby. thnx for sharing, and, great idea Dan.

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View NormG's profile

NormG

4566 posts in 1758 days


#5 posted 02-20-2011 07:56 AM

Excellent idea

-- Norman

View Dchip's profile

Dchip

267 posts in 2006 days


#6 posted 03-10-2011 10:55 PM

Great simple jig. I’m sure some rare earth magnets could be incorporated for holding as well. Just got a planer so I haven’t had to cross this bridge, yet…

-- Dan Chiappetta, NYC, http://www.9x7woodworks.com

View JohnMeeley's profile

JohnMeeley

253 posts in 1087 days


#7 posted 02-10-2012 09:50 AM

Here is your Idea taken a step further.

http://www.superwoodworks.com/Projects/JKnifeJig.htm

-- "The greatest pleasure in life is doing what others say you cannot do."-Walter Bagehot

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