Profiles and Spirals with a 3/4" Barley Twist bit

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Profiles and Spirals with a 3/4" Barley Twist bit

Postby Rcnewcomb » Mon Aug 12, 2019 4:43 am

These are 13" 2x2 pine scraps that came off a packing crate. I used a Magnate 7558 3/4" Barley Twist bit.
15K RPM, 60 IPM, 0.1" pass depth

Depth of cut for these pieces ranged from 0.125" to 0.1875"

I did not use a rounding toolpath at all since the profile and spiral toolpaths overlapped each other.
The profile columns took about three and a half minutes. (0:03:30)
The spiral column took about five and a half minutes. (0:05:30)
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IMG_1336.jpg
IMG_1337.jpg
IMG_1342.jpg
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Re: Profiles and Spirals with a 3/4" Barley Twist bit

Postby Rcnewcomb » Mon Aug 12, 2019 5:50 am

Here is a video of the spiral being carved: Spiral Barley Twist Column
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Re: Profiles and Spirals with a 3/4" Barley Twist bit

Postby dhellew2 » Tue Aug 13, 2019 6:10 am

More variations of the barley twist. Dale
IMG_3515.JPG

IMG_4105 cropped.jpg
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Re: Profiles and Spirals with a 3/4" Barley Twist bit

Postby Rcnewcomb » Sun Aug 18, 2019 12:42 am

used a 1" barley twist. around 10 minutes of machine time.
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Re: Profiles and Spirals with a 3/4" Barley Twist bit

Postby Mark's Wood Chips » Sun Aug 18, 2019 2:59 pm

dhellew2 wrote:More variations of the barley twist. Dale
IMG_3515.JPG

IMG_4105 cropped.jpg


Both of you guy's barley twists are intriguing. I'm struggling with 4th axis work and I notice quite a bit or deflection near the center of the run on smaller diameter parts. Dale's walking sticks are beautiful and I would like to try to make something similar. Dale, could you post a photo of how you deal with deflection on long, narrow parts? Any other hints like tool bits and depth of cuts would be appreciated.

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Re: Profiles and Spirals with a 3/4" Barley Twist bit

Postby mark-s » Sun Aug 18, 2019 3:12 pm

Really like the walking sticks.
Nice work fellas.
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