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)
Profiles and Spirals with a 3/4" Barley Twist bit
- Rcnewcomb
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Profiles and Spirals with a 3/4" Barley Twist bit
- Randall Newcomb
10 fingers in, 10 fingers out, another good day in the shop
10 fingers in, 10 fingers out, another good day in the shop
- Rcnewcomb
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Re: Profiles and Spirals with a 3/4" Barley Twist bit
Here is a video of the spiral being carved: Spiral Barley Twist Column
- Randall Newcomb
10 fingers in, 10 fingers out, another good day in the shop
10 fingers in, 10 fingers out, another good day in the shop
- dhellew2
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Re: Profiles and Spirals with a 3/4" Barley Twist bit
More variations of the barley twist. Dale
You will get old if you live long enough!
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Young = time, no money
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Dale
- Rcnewcomb
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Re: Profiles and Spirals with a 3/4" Barley Twist bit
used a 1" barley twist. around 10 minutes of machine time.
- Randall Newcomb
10 fingers in, 10 fingers out, another good day in the shop
10 fingers in, 10 fingers out, another good day in the shop
- Mark's Wood Chips
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Re: Profiles and Spirals with a 3/4" Barley Twist bit
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.dhellew2 wrote:More variations of the barley twist. Dale
Mark
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Re: Profiles and Spirals with a 3/4" Barley Twist bit
Really like the walking sticks.
Nice work fellas.
mark-s
Nice work fellas.
mark-s