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How do I "relieve" the blade on my Xmas present.

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How do I "relieve" the blade on my Xmas present.

#1

How do I "relieve" the blade on my Xmas present.

Don in Northern Arizona

>I just received a belated Christmas or early New Year's present from my wife, an LN 4 1/2 smoother with two frogs. Drool, pant, pant. Before I start prepping it, I need a clarification. In the articles it is recommended that a smoother's blade be left straight, but the edges be "relieved." How much relief do you guys recommend, and how should I do it? I guess I could do it on the grinder or with a file. I am reluctant to try stoning the edges as it would leave a divot. Should I knock a 1/16" off each edge at a 45 degree angle, round them off, or what? Assistance is greatly appreciated. Pictures of a working relieved blade would be grand. I want to start this beauty off right!

Thanks,

Don

Re: How do I "relieve" the blade on my Xmas present.

#2

Jim in Burlington Ont.

Re: How do I "relieve" the blade on my Xmas presen

Jim in Burlington On

>I just knocked off the smallest amount I could on the side of a coarse stone. About 1/64. After watching David Charlesworth's video and listening to what others like Rob Cosman have to say I've converted all my planes to have a slight crown.

Re: How do I "relieve" the blade on my Xmas present.

#3

Corner Relief on Smoother Blades

Steve Elliott

>I like my smoother blades dead straight in the middle so that I can take a very thin shaving that is almost full width. At the corners, I like the blade edge to drop back just enough that no visible track is left.

I've been using my flatbed scanner to record the corner shape of my blades, and can then calculate how much the edge is rounded. I'll post a sample scan with dimensions that shows the minimum corner relief needed. I'd recommend more relief than is shown so that the blade can be honed several times.

I doubt a file will remove much metal from a Lie-Nielsen blade. I'd use a grinder with the tool rest still set at the angle of the main bevel. If you take a few light passes and watch how much is taken off at the corners it should be pretty easy to get a good result. You can check how much the blade edge drops back by butting the blade edge up to a metal rule. There's no reason to remove more than 1/64" and that much should last through a number of honings.

Re: How do I "relieve" the blade on my Xmas present.

#4

Here's the image

Steve Elliott

>The picture upload didn't work the first time, so here it is again:




Re: How do I "relieve" the blade on my Xmas present.

#5

Re: How do I "relieve" the blade on my Xmas presen

Moses Yoder in White Pigeon, MI

>A very cheap education in sharpening can be had at your local newstand in the form of a Popular Woodworking magazine on hand tools. The whole magazine is devoted to hand tools, and it is well worth the money just for the article on sharpening. For sharpening a smoother blade it is very important that the stones or whatever you use for honing is flat. Try a file first for rounding your smoother iron corners before you try anything else. You can lay the iron on a block of wood, set the file on edge and round it very precisely with this method. The file will take metal off slowly, and you have perfect control over how much the iron is rounded. It works well on my Hock iron, so I imagine a LN or LV iron would work about the same. If you round the corner on a power grinder without some experience there is a good chance you will remove a lot more than necessary. There are of course various ways to round the corners, and you can find one that suits you just fine and then stick with it until you learn something that you think might work better.

One thing to keep in mind if you are just starting to use a smoothing plane is that a smoother is meant to take off small amounts of wood with no tearout and leave a surface free from blemishes. If you pull a board off a power planer and clamp it down, then set your smoother to take very fine shavings, it will take quite a few passes before the wood is flat enough that you will get those fine wide shavings which are what planing of course is all about. It's about the shavings.

Re: How do I "relieve" the blade on my Xmas present.

#6

Use it, first.

Bob Smalser, Seabeck, WA

>I usually forget to stone the corners on any of my plane irons when resharpening and never notice a difference unless the iron ain't set right.

But otherwise, you do it on the stones while honing. If concerned about leaving a divot in the stone, then lock the stone in a vise and use the edge of the stone.

Re: How do I "relieve" the blade on my Xmas present.

#7

I grind a small radii...

Scott Burr in really rainy Ben Lomond,CA

>About a 1/16" on boths sides of the blade then sharpen the blade flat across. A smoother probably doesn't need this when taking sub zero shavings but, if the plane digs in for some crazy reason (trust me you'll see...) it won't leave a grove...just a divot;^) I have a LN 4.5 with the york pitched fron and love it! Did you get the improved chip breaker?

Re: How do I "relieve" the blade on my Xmas present.

#8

Yep.

Don in Northern Arizona

>I guess new ones come with it standard.


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Re: How do I "relieve" the blade on my Xmas present.

#9

Thanks, Folks!

Don in Northern Arizona

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