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| Chip out during planing http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=25577 |
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| Author: | Luke [ Tue Jan 19, 2010 6:23 pm ] |
| Post subject: | Chip out during planing |
Stupid me forgot to sharpen my plane blade before starting to go at my EIR back....now im left with some chip out across my plate, whats the best way to fix this....sharpen my blade and go over? |
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| Author: | Markus Schmid [ Tue Jan 19, 2010 10:13 pm ] |
| Post subject: | Re: Chip out during planing |
Same as Todd. Before starting to scrape (which, btw. is a great experience): if the problem (probably due to heavily interlocked grain) continues you could also increase the cutting angle: on a bevel-up plane ("low angle") it's obvious how to do it, on a "normal" plane you can put a back bevel on the blade (in both cases I would recommend an additional dedicated "higher cutting angle blade"). At 50°-52° (and more) cutting angle, most woods will behave pretty nice regarding tearout. The force required to push the plane will increase significantly with higher cutting angles but tear out tendency will decrease significantly too. P.S. A Peruvian friend of mine just turns the blade in his Stanley plane upside down which results in a cutting angle of 70° (45° +25°) which also works perfectly but tends to "eat up" the edge of the blade more quickly (I have worked with his method and planes too). P.P.S. Yes, I love bevel-up planes... |
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| Author: | SteveCourtright [ Wed Jan 20, 2010 10:56 am ] |
| Post subject: | Re: Chip out during planing |
Also, it is best to plane at 90-45 degrees to the direction of the grain. I have not had good luck with rosewood planing in the direction of the grain and always get some tear-out. |
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