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Strange wear patterns

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Forum topic by bandit571 posted 520 days ago 542 views 0 times favorited 6 replies Add to Favorites Watch
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bandit571

6855 posts in 1317 days


520 days ago

Topic tags/keywords: question plane sharpening

The last few plane irons I have restored, have the center of the edge worn away. Instead of a cambered effect, these were the opposite. The outside corners were sticking out more than the middle areas.

First few trips down the sandpaper, the corners are sharp. The middle of the edge? Not even touched. Back to the grinder and grind a new edge. Now the bevel is consistent acroos the edge.

Question is: Why all the wear in the center of the edge? It takes a lot of work to bring these type of irons back to make a shaving like this

Just not sure what the previuos owners were doing, to wear away the center of the edges.

-- A Planer? I'M the planer, this is what I use


6 replies so far

View Kreegan's profile

Kreegan

1452 posts in 780 days


#1 posted 520 days ago

Edge jointing, roundovers or planing round stock most likely. The part of the iron that gets used most wears the most.

View Dan's profile

Dan

3543 posts in 1514 days


#2 posted 520 days ago

^ Agree… I have run into a number of old irons where the center of the iron is dipped lower then the sides. Most likely the plane was previously used for edge work or narrow stock where the full iron was not used.

-- Dan - "Collector of Hand Planes"

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Dan

3543 posts in 1514 days


#3 posted 520 days ago

I also want to add that sometimes you will run into an old plane where the middle area of the sole is dipped lower then the sides along the length of the plane. This is also due to the plane previously being used primarily for narrow edge work.

-- Dan - "Collector of Hand Planes"

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Johnnyblot

318 posts in 910 days


#4 posted 520 days ago

Using stones that are convex will produce the same thing.

Beware Of Hollow Stones” is the first line of my notes taken when being taught by David Charlesworth on Grinding and Honing. Simple but True.

Cheers

John

-- Gossamer shavings just floating around the back yard….-Bandit

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bandit571

6855 posts in 1317 days


#5 posted 520 days ago

Lets see, i got the sole of the latest plane looking good

Then turned to work on the iron.

By using the side of the grinder’s wheel, I got the back flat. As for the “business side”

This is after it was worked over on the grinder. With a water quench as needed. I had it set up for a run on the beltsander, and then on to the stones. Followed that up with some 2k paper, and away it went. Spent more time on the iron, than the rest of the plane.

-- A Planer? I'M the planer, this is what I use

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bandit571

6855 posts in 1317 days


#6 posted 520 days ago

I will be getting a Dunlap Block plane tomorrow in the mail. Will be checking the iron on that one, as well. Although, I did have one block plane show up with a cambered iron….

-- A Planer? I'M the planer, this is what I use

View Don W's profile

Don W

14888 posts in 1201 days


#7 posted 519 days ago

I’ll agree with John, out of wack water stone.

-- Master hand plane hoarder. - http://timetestedtools.com

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Don W

14888 posts in 1201 days


#8 posted 519 days ago

dup deleted

-- Master hand plane hoarder. - http://timetestedtools.com

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