Engraving a bowl

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Engraving a bowl

Postby dtorney » Thu May 11, 2017 2:55 pm

engraving_example.pdf
Example
(8.1 KiB) Downloaded 103 times


I'm new to CNC and could use guidance. I'll use VCarve Pro.

I aim to make a hardwood bowl and engrave its interior with a mathematically-defined
set of curves like ones depicted in the attachment. The depicted curves
would be parlayed into v-shaped channels about 1/16" deep.

Should these channels be included in the bowl's model opened by VCarve Pro? Can
they be specified separately? Does VCarve Pro handle engraving in special ways?
dtorney
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Re: Engraving a bowl

Postby Mike-S » Thu May 11, 2017 3:36 pm

After you make your bowl shape, turn the math line into a vector. Project that onto the inner bowl.
Attachments
mathbowl.jpg
mathVcarve.jpg
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Re: Engraving a bowl

Postby coastingmesa » Sun May 14, 2017 10:42 am

Ah excellent. Thanks for the tip Mike. Turning the map line into a vector :)
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Re: Engraving a bowl

Postby dtorney » Thu May 18, 2017 8:49 pm

Dear Mike,

Many thanks.

Can a "vector" be used to engrave one curve with one depth and another with a different depth?
I'm thinking I'd like a "v" profile. I might want its depth to change, along the curve.

David
dtorney
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Re: Engraving a bowl

Postby dtorney » Thu May 18, 2017 9:13 pm

Dear Mike,

Looking at your attachments, curves in mine can sit on the surface of
the basin of a bowl, which they circle.

Best from

David
dtorney
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Posts: 11
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Re: Engraving a bowl

Postby Mike-S » Fri May 19, 2017 5:38 pm

Not sure what you're asking.
You can V-carve or Profile ON, but need to check "Project toolpath onto 3Dmodel" in either case.
For V-carves, the depth is set by V-bit "pointiness" and distance between the two vectors.
For Profiles ON a vector, you can set a different depth for each vector. I don't know how you could control different depths along the same vector except maybe to play with fluting.
Below is "Profiled"; first example above was V-carved.
Attachments
mathbowlprofileON.jpg
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Re: Engraving a bowl

Postby dtorney » Fri May 19, 2017 5:52 pm

Dear Mike,

I'm planning to cut the bowl first and to engrave on it with the
methods you suggested. When I do, I'll post photos here.

I enrolled for the Vectric workshop in Las Vegas, 20-21 October.
That will help me come up to speed, and, by then, I'll have some
experience with CNC routing.

Many thanks,

David
dtorney
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Posts: 11
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Re: Engraving a bowl

Postby JackS » Thu Jul 27, 2017 10:51 pm

Where is the workshop thru in vegas? I would like to sign up. I'm located in L.A. and desperately need to take a class.
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