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Camber smoothing plane iron?

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Forum topic by Ben posted 07-03-2018 08:56 PM 856 views 1 time favorited 9 replies Add to Favorites Watch
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Ben

442 posts in 3278 days


07-03-2018 08:56 PM

Do you folks hone your smoothing plane irons on a slight camber?
Do any of you use the camber roller that comes with the Veritas MKII jig, or would that be too severe a camber?

I can get my #4 super nice with beautiful shavings, but I haven’t gotten to the point where it’s leaving my work finish ready because of the blade “tracks.”

Thanks for any tips for how to hone this.


9 replies so far

View Smitty_Cabinetshop's profile

Smitty_Cabinetshop

16142 posts in 3039 days


#1 posted 07-03-2018 09:06 PM

Very slight (very. slight.) camber, ease the corners off as well. To do the latter, place the cutter flat on your bench, bevel down. Take a flat file on edge, and make a few passes with a radius motion on each corner, to relieve those hard corners. Just takes a couple seconds, and a light touch.

-- Don't anthropomorphize your handplanes. They hate it when you do that. -- OldTools Archive --

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Mr_Pink

166 posts in 792 days


#2 posted 07-03-2018 09:13 PM

I grind my smoothing plane irons straight across, but relieve the corners a bit when honing. Using an Eclipse-style guide, I take extra passes (maybe five) on each stone with pressure placed on one corner and then the other.

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Smitty_Cabinetshop

16142 posts in 3039 days


#3 posted 07-03-2018 09:15 PM

^ That’s the epitome of slight radius. :-)

-- Don't anthropomorphize your handplanes. They hate it when you do that. -- OldTools Archive --

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jmos

916 posts in 2790 days


#4 posted 07-04-2018 12:14 AM

If you think about it, you’re trying to get shaving that is a couple of thousands thick from your smoother. If your camber is a lot more than that, you’re just reducing the width of the shaving you’ll get, at the thickness you want, meaning you’ll have to lake more passes.

If you get a full width shaving and leave tracks, you need more camber. If you’re getting a shaving as thick as you want, but it’s way less then the full blade width, you have too much camber.

I grind my blade square, and only camber on a fine stone using finger pressure on each corner for a couple of passes. I found using pressure on the corners on a lower grit stone it’s easy to over camber, and loose effective width on your blade. I do use the cambered roller with my MKII, as the flat roller is so wide it makes it hard to get any camber.

-- John

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John

246 posts in 2002 days


#5 posted 07-04-2018 12:53 AM

^ excellent explanation

-- I measured once, cut twice, and its still too short...

View mel52's profile

mel52

866 posts in 685 days


#6 posted 07-04-2018 01:28 AM

I would like to thank you all for the great explanations. I was having a slight problem with this like Ben was.

-- MEL, Kansas

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SFP

36 posts in 1677 days


#7 posted 07-17-2018 10:05 AM



I grind my smoothing plane irons straight across, but relieve the corners a bit when honing. Using an Eclipse-style guide, I take extra passes (maybe five) on each stone with pressure placed on one corner and then the other.

- Mr_Pink


Second this. Don’t waste your time trying to figure out a camber method. Just relieving the corners is quicker and it will give you the ability to use much more of the iron for planing!

View Robert's profile

Robert

3436 posts in 1901 days


#8 posted 07-17-2018 02:36 PM

Ben,

I do not like cambers on any plane irons other than for roughing.

Like MrPink and SFP, I just ease the edges over and that works fine for me.

Also, be sure you’re taking light passes.

-- Everything is a prototype thats why its one of a kind!!

View TheFridge's profile

TheFridge

10858 posts in 1907 days


#9 posted 07-17-2018 05:52 PM



Very slight (very. slight.) camber, ease the corners off as well. To do the latter, place the cutter flat on your bench, bevel down. Take a flat file on edge, and make a few passes with a radius motion on each corner, to relieve those hard corners. Just takes a couple seconds, and a light touch.

- Smitty_Cabinetshop

Ditto. I used to do straight across but was convinced otherwise by a British fellow and my 4-1/2. A shaving is a shaving whether it’s a couple thou thinner on the edges or not.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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