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Flattening Chisels

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Flattening Chisels

#1

Flattening Chisels

dave caudill

>I was in my shop last night flattening chisels. This may not sound like much but I have been in the midst of a kitchen remodel since august so it is really nice having my shop back. Up until now it has been full of appliances, furniture, our kitchen and all sorts of building materials. Being without it for four months has been a challenge and I didn't realize how much I would miss it.

So back to the chisels. I've been wanting to get to some of the chisels I have been acquiring and started this weekend. Last night I decided after a long wait it was time to get to the Lie-Nielsen chisels I had purchased. I had been flattening some old Stanley Everlasting chisels with not too much effort and was making some progress on a couple.

I thought I would start easy and do the 1/4 inch first. Since I had had good luck in the past with LN tools I started at 220 grit rather than 100. Wisk wisk and it was done and on to 320 wisk wisk done. Then the 1/2 inch the same, 5/8 done nothing flat, 1/8 inch and finally the 3/4 inch. In less than 15 minutes I had all of the backs of the LN chisels done to where I then go to the stones. Needless to say the 1/4 Everlasting took me marginally longer to get it to this point and I didn't start at 220 grit.

Don't get me wrong this is not to say you should dump your old chisles and immediately run out and buy the set of LN chisels. I have long been advocating old chisels and will continue to do so. The point is that the LN chisels like all of the other LN tools are just a cut above everything else that is new and perform like the dozens of old Witherby, P.S.& W. Swan and other such chisels. They are a fine choice for new chisels in what is in my opinion a very limited market for decent chisels.

So now its back to the flattening table and my old Stanley's.

Dave

Re: Flattening Chisels

#2

Yikes Dave!!

Dave Anderson Chester, NH

>You must have been going through really nasty withdrawal. If I went more than 3-4 weeks without even a few minutes of shop time I'd be a full time resident of the funny farm and not just an someone on work release. Remember, the kitchen isn't that necessary, there are plenty or restauants and takeout places.

Re: Flattening Chisels

#3

Re: Flattening Chisels

philly

>Dave

Have to agree with you as to the flatness of the L-N's. It took me longer to flatten the back of one 1/2in Japanese chisel than it did to do the whole roll of L-N chisels!

regards

Phil


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Re: Flattening Chisels

#4

Re: Flattening Chisels

Mike in Mystic

>my only question is why did you touch the backs at all? I examined my set and determined they were already perfectly flat to begin with. Maybe my standards are too low :)

congrats on getting your shop back.

Mike

Re: Flattening Chisels

#5

Re: Flattening Chisels

dave caudill

>I kind of mispeak here as I use flatten and polish synonymously. To get a truly sharp edge you need to polish the backs of the chisel and any other edge tool so that when the two sides meet they provide an exceptionally sharp edge. Take a knife for instance. You wouldn't just sharpen one edge it would help but would not give you your sharpest blade. By polishing/flattening you get a shaper longer lasting edge.

Flattening is important when trying to make a straight cut as in doing the side of a mortise joint. You want that chisel to ride down the inside face of the wood and if its flat you have a better chance of getting a nice straight cut.

Just to go a little further. After I finish with my sandpaper on glass I go to my stones. I start at 1000 go to 4000 and then finish at 8000. This is pretty common although some prefer to go to 12000. At this point you have a very smooth finish that will work to a very nice edge. Its tedious but once done you shouldn't have to do it again. In the case of the Lie-Nielsen chisels they were a pleasure compared to others I have done.

After you finish the backs then you work your beveled edge. Again I go up to 8000 grit. I've had pretty good luck with this and its how I was taught so I've just stuck with it.

Dave

Re: Flattening Chisels

#6

Re: Flattening Chisels

paul womack

>From the LN site:

The backs are ground flat and finished by hand at 400 grit. You will probably want to do additional honing.

BugBear

Re: Flattening Chisels

#7

Re: Flattening Chisels

Mike in Mystic

>I understand that - I did hone the backs of my chisels, too - just not flatten them, as the OP had said. Even then, I didn't spend more than 2 minutes per chisel (I actually used my MKII to do the honing of the backs, and that is a very fast operation).

Mike

Re: Flattening Chisels

#8

Dave & Philly,....

Don Thompson - Cutler Ridge, Florida

>Did you really have to start at 220 grit? As BugBear pointed out, they are alledgely polished to 400 grit by the factory.

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