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Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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#1
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Bowl gouge angle
What sharpening angle do you use for bowl gouges. I have always used
35 degrees. I tried 30 but they seem to dull just as quick and went back to 35. I sharpen on a belt sander so it is a flat bottom. -- Gerald Ross Cochran, GA I think I lost my mind. Please watch where you step. |
#2
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Bowl gouge angle
Hello Gerald,
I believe that the normal bevel for bowl gouges should be 40 to 45 degrees; however, that grind will not allow you to cut all of the way to the bottom of the bowl. You will need a second gouge with a 60 to 80 degree grind to finish turning to the bottom of the inside of the bowl. Several years ago, I adopted the Ellsworth grind, which produces a 60 degree nose bevel and swept back wings that can be used for shear scraping. I find that it works very well on both the outside and the inside of a bowl. It is best to have an Ellsworth Grinding jig to make this grind. I purchased mine several years ago from Woodcraft. I believe that Packard Woodworks also carries them. I don't know how it would work on a belt sander, but it should work just fine. Fred Holder http://www.morewoodturning.net On May 2, 6:57 am, Gerald Ross wrote: What sharpening angle do you use for bowl gouges. I have always used 35 degrees. I tried 30 but they seem to dull just as quick and went back to 35. I sharpen on a belt sander so it is a flat bottom. -- Gerald Ross Cochran, GA I think I lost my mind. Please watch where you step. |
#3
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Bowl gouge angle
"Gerald Ross" wrote: (clip) I tried 30 but they seem to dull just as quick and went back to 35. (clip) ^^^^^^^^^^^^^^^^^^^ If I understand your measurements, a 30 degree angle is thinner than a 35. Generally, a thinner edge is *sharper,* but more delicate--so initially it will cut better, but dull more quickly. |
#4
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Bowl gouge angle
I have some "fingernail" skews that are 60+ years old.
Long and shallow - shaving / cutting edges. But modern ones are far blunter for heaver cutting. Martin Leo Lichtman wrote: "Gerald Ross" wrote: (clip) I tried 30 but they seem to dull just as quick and went back to 35. (clip) ^^^^^^^^^^^^^^^^^^^ If I understand your measurements, a 30 degree angle is thinner than a 35. Generally, a thinner edge is *sharper,* but more delicate--so initially it will cut better, but dull more quickly. |
#5
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Bowl gouge angle
On Sun, 02 May 2010 09:57:32 -0400, Gerald Ross wrote:
What sharpening angle do you use for bowl gouges. I have always used 35 degrees. I tried 30 but they seem to dull just as quick and went back to 35. I sharpen on a belt sander so it is a flat bottom. Depends on the angle of the bowl walls and relationship to the bottom.. Quote from Steve Russell: "If you're turning a standard half-round bowl, a 45-degree front bevel angle may work well. However, that same 45-degree bevel won't work with a deep tulip style bowl, which may need a 60, or even a 65-degree front bevel to maintain bevel contact throughout the cut." I'm not that extreme, but I do use gouges of different bevels on different types of bowls.. Not that I can maintain a bevel from rim to bottom-center.. lol mac Please remove splinters before emailing |
#6
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Bowl gouge angle
Gerald Ross wrote:
What sharpening angle do you use for bowl gouges. I have always used 35 degrees. I tried 30 but they seem to dull just as quick and went back to 35. I sharpen on a belt sander so it is a flat bottom. Sorry about the trick question folks. I should clarify that I use a side-cutting grind. Also that 30 should have been a 40. I just wanted to know what angle you experts are using. Even Leonard Lee ducks the question for side-cutting bowl gouges. He gives the traditional angle for straight across bowl gouges. Thanks, Mac. At least you answered the question--"various". Guess I should break down and buy a book on turning, but even then that is only one opinion per book. -- Gerald Ross Cochran, GA Why are there flotation devices under plane seats instead of parachutes? |
#7
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Bowl gouge angle
"Gerald Ross" wrote: Why are there flotation devices under plane seats instead of parachutes? ^^^^^^^^^^^^^^^^^^^^^^^ Because parachutes don't float worth a damn. |
#8
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Bowl gouge angle
On Mon, 3 May 2010 7:50:25 -0500, Gerald Ross wrote
(in message ): Gerald Ross wrote: What sharpening angle do you use for bowl gouges. I have always used 35 degrees. I tried 30 but they seem to dull just as quick and went back to 35. I sharpen on a belt sander so it is a flat bottom. Sorry about the trick question folks. I should clarify that I use a side-cutting grind. Also that 30 should have been a 40. I just wanted to know what angle you experts are using. Even Leonard Lee ducks the question for side-cutting bowl gouges. He gives the traditional angle for straight across bowl gouges. Thanks, Mac. At least you answered the question--"various". Guess I should break down and buy a book on turning, but even then that is only one opinion per book. In the final analysis, you will experiment and observe, and decide on a setup that suits your style and temperament. You may even decide on a combination of tools, like maybe a hook for quick removal of lots of wood, and then various gouges and scrapers for the finish work. Yes, some turners might use just one gouge for every stage of a bowl from roughing to finish but not all of them do. You're you. It ain't rocket surgery. tom koehler -- I will find a way or make one. |
#9
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Bowl gouge angle
On Mon, 03 May 2010 08:50:25 -0400, Gerald Ross wrote:
That's why I use cheap bowl gouges, Gerald.. So I can have 3 at a time on the rack with different grinds.. "Normal", "Side Grind / Swept wing" , "Almost sharpened the handle", etc... Gerald Ross wrote: What sharpening angle do you use for bowl gouges. I have always used 35 degrees. I tried 30 but they seem to dull just as quick and went back to 35. I sharpen on a belt sander so it is a flat bottom. Sorry about the trick question folks. I should clarify that I use a side-cutting grind. Also that 30 should have been a 40. I just wanted to know what angle you experts are using. Even Leonard Lee ducks the question for side-cutting bowl gouges. He gives the traditional angle for straight across bowl gouges. Thanks, Mac. At least you answered the question--"various". Guess I should break down and buy a book on turning, but even then that is only one opinion per book. mac Please remove splinters before emailing |
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