Sharpening tools

[eric.l.mathison]

A card scraper needs a burr. You use a burnisher to create the burr. You use a file from time to time to flatten the edge and remove previous burrs.

So you don't need a burr on any other tool?

[Immortan D]

Only on scrapers as far as I know.

[Tpt life]

2 hours ago, eric.l.mathison said:

So you don't need a burr on any other tool?

The answer was only hinted at here. Card edges can groove your soft stones. This is the big reason to joint with a file. You can do it with a stone, but that cuts into efficiency when you need to dress the stone.

The burr is because of the mechanics of usage. You do not shear cut the same as a knife edge will turned around the other way. You technically can get by without a burr if you have a sharp edge. Again, the burr is more capable and therefore more efficient. 

[Immortan D]

You can skip the burr if the blade is thick enough to hold an edge. That's the case with scraping planes. But with card scrapers you cannot skip it unless you want to sharpen again every few passes.

[eric.l.mathison]

The answer was only hinted at here. Card edges can groove your soft stones. This is the big reason to joint with a file. You can do it with a stone, but that cuts into efficiency when you need to dress the stone.

The burr is because of the mechanics of usage. You do not shear cut the same as a knife edge will turned around the other way. You technically can get by without a burr if you have a sharp edge. Again, the burr is more capable and therefore more efficient. 

Ah thanks a bunch for clearing that up.

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