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Bowl Chisels (Read 727 times)
 
Bruce Kamp
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Bowl Chisels
May 12th, 2016 at 12:02pm
 
I just got a new set of bowl chisels. I must admit that I am really a novice in their use. I have watched a number of videos on the proper way to use them but have had trouble with it.
I have practiced on a piece of oak and they seemed to work ok. It took a little bit to learn the correct angle to avoid catches and I can see how useful they will be. However, my problem has come with using them on segmented bowls. I just can't seem to find the proper angle. I know if I practice more I should be able to figure it out. However, since segmented bowls take a lot of work to put together I don't want to risk one if I can help it.
My question is, is there any difference between turning a segmented bowl with a bowl gouge turning a solid piece of wood? I am not turning any endgrain on the segmented bowl. The wood has been a combo of walnut, paduak, ash, maple, and jotoba.
I just thought there might be some technique that I can't figure out. My chisels are sharp.
Thanks for any advice.

Bruce
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Don Stephan
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Re: Bowl Chisels
Reply #1 - May 12th, 2016 at 7:04pm
 
You might post your question on the Segmented Turning board here.
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Grant Wilkinson
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Re: Bowl Chisels
Reply #2 - May 12th, 2016 at 9:03pm
 
I turn both solid wood, wet and dry, and segmented pieces, closed and open. I don't change anything in terms of gouge size, sharpening angle or presentation to the wood. So far, so good.
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Grant Wilkinson
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Ken Vaughan
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Re: Bowl Chisels
Reply #3 - May 12th, 2016 at 9:05pm
 

Bruce

The difference is likely the density of some of the segmented wood.   The need for well shaped and sharpened tools goes up also.

Oak and jotaba are very different.   

If your presentation is the same, sharpness is likely part of the challenge.

Plan to slow down the feed and sharpen when the tool could be sharper.
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Bruce Kamp
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Re: Bowl Chisels
Reply #4 - May 27th, 2016 at 9:22am
 
I think I figured out my problem. My grind was terrible. I had built a wolverine sharpening jig and did, what I thought was, a nice even grind. However, after staring at it for awhile I finally realized that the wings were all wrong. Everything was sharp but the wings weren't swept back at all. In fact, the might even have been a little forward. This was causing my catching. It was terrible.
I reground them. Still not fully correct but a lot better. Then I played with them on a fresh, solid, blank. What a difference.
This taught me that I have to pay,closer attention to how I sharpen the gouges.
Thanks for all the advice.
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Ed Weber
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Re: Bowl Chisels
Reply #5 - May 27th, 2016 at 9:48am
 
Ken Vaughan wrote on May 12th, 2016 at 9:05pm:
Oak and jotaba are very different.

If your presentation is the same, sharpness is likely part of the challenge.

Plan to slow down the feed and sharpen when the tool could be sharper.


I agree, this was talked about a bit in Multimedia File Viewing and Clickable Links are available for Registered Members only!!  You need to Login or Register
As one of the pictures I posted has purpleheart and poplar, these two woods have vastly different densities, you almost have to treat it as if it's a open segmented. You may need to speed up the RPM's and concentrate more on cutting the harder/denser wood.
Hope that makes sense.
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Walt
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Re: Bowl Chisels
Reply #6 - May 27th, 2016 at 9:49am
 
Keep in mind that you are cutting a lot of dried glue also.  The glue will dull you tools faster than most think.
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