Ruler Trick Question

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Joe

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Can anyone tell me whether or not it is ok to use the ruler trick on a cabinet scraper blade (No. 80 style)?
 
Shouldn't be a problem - only an issue if you use the back of the blade to reference the cut, like with a chisel.
Hope this helps
Philly :D
 
Ok, thanks. That should save me several tedious hours of blade polishing. I was just concerned that the slight back bevel might in some way have an adverse effect on the burr.
 
Nick - the 'ruler trick' is an invention of MrC's and involves placing a very thin rule along on side of the polishing stone. The plane blade (never a chisel blade) is place flat side down on the rule so that the edge is along the opposite side and the back is simply honed which gives a minute and insignificant bevel of about one third of a degree on the back surface - Rob
 
Thanks woodbloke,
For that very concise and accurate explaination.

Would that it were always thus...........

I have two forum people here this week on my sharpening tool tuning and plane use course. They have just prepared new cambered blades and shaved with them. I think they are liking the ruler trick!

David C
 
Joe":32xd4qmf said:
Ok, thanks. That should save me several tedious hours of blade polishing. I was just concerned that the slight back bevel might in some way have an adverse effect on the burr.

it had never occurred to me to polish a scraper :? Does anyone else do this?
I just run it across a diamond stone to remove previous burrs

I find they work fine as supplied, but if they can be improved.... (only really use hand scrapers)
 
David C":1wuvsvej said:
I have two forum people here this week on my sharpening tool tuning and plane use course. They have just prepared new cambered blades and shaved with them. I think they are liking the ruler trick!

David C

Our commission on sending students to you is very reasonable :wink:
 
Chris,

Delighted to hear of these low commission rates!

I think I would need verification that you are sending them, and they are not deciding on their own ~;-)#

best wishes,
david
 
Tony":eoric2ga said:
Joe":eoric2ga said:
Ok, thanks. That should save me several tedious hours of blade polishing. I was just concerned that the slight back bevel might in some way have an adverse effect on the burr.

it had never occurred to me to polish a scraper :? Does anyone else do this?
I just run it across a diamond stone to remove previous burrs

I find they work fine as supplied, but if they can be improved.... (only really use hand scrapers)

I should point out that I am making it up as I go along here. I just assumed that fine scratches on the faces (and/or bevel in this case) of a scraper would produce a minutely "toothed" burr which would etch it's (albeit faint) profile on the wood surface.

Joel (on a steep learning curve)
 
Joe,

Most traditional texts, and many modern ones, recommend that the large faces will be polished adjacent to the edges, as well as the edges.

The aim as you deduced is to create a sharp square edge before turning/creating the hook.

Sharp mens polished, and the surface finish of a new card scraper is not good.

That is my take,

There was an excellent exploration of card scraper sharpening methods, published by Chris Schwarz, in Popular Woodworking last year. He is astonishingly rigorous, finding about ten different methods and trying them all.

best wishes,
David
 
Tony":1bco3eee said:
it had never occurred to me to polish a scraper :? Does anyone else do this?

I do :) I also go over the flat side with the burnisher (keeping it dead flat) before turning over the blade and creating the hook.

Cheers :wink:

Paul
 
I trick I used to do many moons ago was to to polish the two flat surfaces on top of the stone and then polish the edge by putting the wooden lid back on and trapping the blade 'twixt lid and wooden base. The edge was then polished dead flat and square along the side of the stone. Trouble is, you need an oilstone and traditional wooden box to do this one...difficult to do it with a DMT :) - Rob
 
David C":ynj1jtta said:
There was an excellent exploration of card scraper sharpening methods, published by Chris Schwarz, in Popular Woodworking last year. He is astonishingly rigorous, finding about ten different methods and trying them all.

I found this article:

http://www.popularwoodworking.com/artic ... y?id=14549

but it looks more like a summary of the exploration you glowingly describe.

BugBear
 
woodbloke":76gjtc4g said:
I trick I used to do many moons ago was to to polish the two flat surfaces on top of the stone and then polish the edge by putting the wooden lid back on and trapping the blade 'twixt lid and wooden base. The edge was then polished dead flat and square along the side of the stone. Trouble is, you need an oilstone and traditional wooden box to do this one...difficult to do it with a DMT :) - Rob

Yes - that trick is in many old texts. It's always struck me as a good(or is that bad?) way to put a groove in the side of your stone, since the very narrow scraper always hits the stone in the same place!

BugBear
 
bb wrote:
It's always struck me as a good(or is that bad?) way to put a groove in the side of your stone, since the very narrow scraper always hits the stone in the same place
Does it matter though? - Rob
 
woodbloke":334nc953 said:
bb wrote:
It's always struck me as a good(or is that bad?) way to put a groove in the side of your stone, since the very narrow scraper always hits the stone in the same place
Does it matter though? - Rob

Onct your stone has a (concave) groove in the exact place you're trying to use to work the edge of your scraper, I'd have thought so, yes.

BugBear
 
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