Reply To: Spear & Jackson traditional skew blade saw
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Is it resharpenable or does it have impulse hardened teeth? (Often recognisable by their color difference to the rest of the plate) Impulse hardened teeth are not resharpenable because they are too hard for a file to cut. You would have to grind all the teeth off and cut new teeth. Not something I would recommend if you’re just starting out.
Is it a ripsaw or a crosscut saw?
For a rip saw, sharpening is pretty easy. Paul has a video about it: https://www.youtube.com/watch?v=UA5DixEaaUo
Crosscut is a bit different, but still very doable: https://www.youtube.com/watch?v=UA5DixEaaUo
Using a file guide is really a short term solution. It makes you rely on the guide instead of the skill you are building. You can certainly use them as ‘training wheels’, but eventually freehand will be faster.
Exact rake and fleam (had to look those words up, although I sharpen my own saws) depend on what you want to do with the saw. Paul explains this in his saw sharpening video’s. For a ripsaw you would file perpendicular to the plate. For a crosscut, or fleam cut, you would file at a certain fleam angle, as explained in Paul’s crosscut sharpening video.
I hope this helps a little. Good luck sharpening!