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life of jointer knives

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Forum topic by TheSerpenteer posted 370 days ago 222 views 0 times favorited 4 replies Add to Favorites Watch
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TheSerpenteer

9 posts in 430 days


370 days ago

I’ve recently started using my first jointer. The Steel City 6” deluxe model. I’ve never owned a jointer before so a lot of this is new to me.

I had a project I was starting using dimensioned lumber bought at a big box store. I was gluing some of it up, so even though it was already dimensioned, obviously it was far from perfect. So, on to using my new jointer.

Really didn’t have to take off much material, used extremely small passes. But I already have lines on the boards where there must be nicks in the knives. Now in my opinion, I barely had to put the knives to work, we’re probably talking about six 6” wideboards no longer than 24”, and maybe a dozen or so 3.5” wide boards.

I know that anything could cause a nick in the knives, but it doesn’t seem right to me that after only so little already dimensioned and smooth boards, I should be seeing 4 or 5 lines.

Is that normal? Also, are there better after-market blades for the jointer that will serve me better. I am very willing to spend the money after seeing the difference Forrest blades made on my table saw, and how much better my bandsaw cut after replacing the stock blade.

I should note that I didn’t notice the lines after the first few boards, but they were very easily seen later when held up to the light.

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GaryK

9530 posts in 884 days


370 days ago

It doesn’t seem normal to me. Are all the nicks on the same blade? If so it’s probably too hard.
If they are on all blades who knows.

You can shift the blades a little to the left or right to get rid of the lines.

Are they something you can sand out easily?

-- Gary, East TX -- The longest journey begins with a single step.

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Joey

259 posts in 711 days


369 days ago

One thing you can do in the future is use a metal brush to clean the wood off, remove any sand small rocks, grit, etc. after the brush, blow it completely off with compressed air. I have a rikon jointer that I’ve had for over a year and still on the original set of knives.

-- Joey, Magee, Ms http://woodnwaresms.com

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Scott Bryan

20703 posts in 717 days


369 days ago

After 4 years I am still using my original knives but, like you they started getting nicks in them almost immediately. This was due to my negligence in that I jointed some boards with dried glue spots on them. But like Gary said I shifted the knives that were nicked about a 1/16 left and right so that the nicks do not line up and it worked pretty well. But the ridges sanded out easily enough so I wasn’t too upset about it.

Another thing you might want to take a look at is this jointer blade hone that Woodcraft sells. I got one and it improved the performance of my knives.

-- With God's help all things are possible- even woodworking. Woodworking is not just a hobby, it is an (expletive deleted) expensive hobby.

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ajosephg

443 posts in 457 days


369 days ago

It’s been my experience that glue lines are hard on knives.

-- Joe

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