3D Scalloped Bowl

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3D Scalloped Bowl

Postby llwood » Thu Jan 30, 2014 3:22 am

IMAG0476.jpg
Large, 3D Scalloped Bowl, done completely in VCarve Pro, top and bottom.
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Re: 3D Scalloped Bowl

Postby llwood » Thu Jan 30, 2014 3:23 am

IMAG0479.jpg
Closeup of the bottom
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Re: 3D Scalloped Bowl

Postby llwood » Thu Jan 30, 2014 3:24 am

IMAG0478.jpg
I took all these pictures, I might as well use them!
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Re: 3D Scalloped Bowl

Postby Ms Wolffie » Thu Jan 30, 2014 12:50 pm

My oh my you have been a busy little CNCer :D
Very nice work.
Cheers
Wolffie
Cheers
Wolffie

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Re: 3D Scalloped Bowl

Postby spyderxxx » Thu Jan 30, 2014 12:53 pm

So how did you create the 3D bowl? Very interesting.

Ed
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Re: 3D Scalloped Bowl

Postby mikeacg » Thu Jan 30, 2014 2:06 pm

Beautiful work (and great pictures as well)! Approx. size?

Mike
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Re: 3D Scalloped Bowl

Postby ChrisInEstes » Thu Jan 30, 2014 5:38 pm

Very nice... I've got some fluted shallow bowls/dishes up on my Etsy store.

I'm assuming you did the inside (with fluting paths) first, then flipped it over. May I ask how you located it & held it in place while you machined the bottom?

Thanks for posting,
Chris
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Re: 3D Scalloped Bowl

Postby zeeway » Fri Jan 31, 2014 12:34 am

Classy work.

Angie
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Re: 3D Scalloped Bowl

Postby llwood » Fri Jan 31, 2014 12:59 am

Size is 12x12x3.

Chris is correct, the inside was created with a fluting toolpath, 18 flutes cut with a 2" surface planing bit,
starting at the outside and meeting in the center. Each flute is rounded, ramps over the complete length
and the flute depth is 2 1/4".

We drilled 4 holes in the corners, then drilled 4 holes in the same location in the wasteboard, then put
dowels in the holes to get it in the same position.

Outside was cut with 4 differently angled V-bits, each cut further out. 150, 120, 90, and 60 degrees.
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Re: 3D Scalloped Bowl

Postby llwood » Fri Jan 31, 2014 1:36 am

On the bottom, there were 3 passes cut with the 150 degree bit, each further out and a deeper
depth to create a straight line, then 3 more passes with the 120 degree bit. Then 1 with the 90
and 1 with the 60.

I just spent 10 days visiting my Dad and we did CNC projects every day. It worked out
perfectly because it was too bloody cold to do anything else!

Andy
Locust Lane Woodworking (with Marlin)
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Re: 3D Scalloped Bowl

Postby ChrisInEstes » Fri Jan 31, 2014 5:39 pm

Andy, thanks for posting your process. I didn't think of using an end mill type bit for my bowl & dish work. The few I've done have used a ball mill. I'll give it a go with an end mill and see how that works for me.

Thanks!
Chris
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Re: 3D Scalloped Bowl

Postby llwood » Fri Jan 31, 2014 5:47 pm

Chris, the End Mill Shaped bit with the really large diameter is what creates the scallops. The diameters of the
cuts of the 2" surface planing bit (the largest I could get) overlap to create the scalloped shape. That pattern
was cut with 18 flutes. With a ball nose, the same pattern would have taken hundreds of flutes.

Should I post the .crv file?

--Andy
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Re: 3D Scalloped Bowl

Postby Bob Jr » Fri Jan 31, 2014 5:51 pm

Andy,
Nice bowl!
I like the method you used for rounding off the bottom.
Bob
hammer...nails...stuff
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Re: 3D Scalloped Bowl

Postby ChrisInEstes » Fri Jan 31, 2014 6:18 pm

llwood wrote:Chris, the End Mill Shaped bit with the really large diameter is what creates the scallops. The diameters of the
cuts of the 2" surface planing bit (the largest I could get) overlap to create the scalloped shape. That pattern
was cut with 18 flutes. With a ball nose, the same pattern would have taken hundreds of flutes.

Should I post the .crv file?

--Andy


Yeah, I understand the relationship to your flute size & shape with the end mill you used. The fluted bowls & dishes I've made did have LOTS more (and smaller) flutes. The one in the pictures below is 5.5" and used a .375" ball nose with 72 flutes.

I'd like to see your .crv file, and I bet other's would too. It would be interesting & educational to see how the tool paths relate to the final piece.

Thanks!
Chris
Attachments
Large Ash Heart 2.jpg
72 Flute Ash Heart
Large Ash Heart 1.jpg
72 Flute Ash Heart close-up
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Re: 3D Scalloped Bowl

Postby llwood » Sat Feb 01, 2014 4:53 am

Wow, that 72-flute ash heart is gorgeous!

*.crv files for both the top and the bottom are attached.

Andy
Attachments
Scalloped Bowl Bottom.crv
(1.11 MiB) Downloaded 917 times
Scalloped Bowl Top.crv
(764.5 KiB) Downloaded 865 times
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