Making a circle into a cove---HELP Please

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connalj
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Making a circle into a cove---HELP Please

Post by connalj »

Hi all,
My wife wants me to make her a desk organizer that will be elevated so that her keyboard can reside under it; when not used. It will measure 8" deep and 19" long and will be on some type of platform at each end so that she can scoot her keyboard under it. One of the sections/compartments needs to be a cove like circle with a diameter of 3" and about .3 deep in the material. I have Vcarve Pro and no clue as to how this accomplish this.
Below are pics of the cove like area I am trying to achieve where she can put paper clicks in.

Can anyone help me?
desk organizer
desk organizer
desk organizer 2
desk organizer 2

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highpockets
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Re: Making a circle into a cove---HELP Please

Post by highpockets »

Import a 45° Dome Dish. Resize the Dish to 3". Add a Zero Plan Component. Modify the Dish to Combine mode Subtract. Set the Shape Height to .3". Last I'd add a Boundary Vector for use when creating the toolpath for the Dish component.

Hope this helps...
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FixitMike
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Re: Making a circle into a cove---HELP Please

Post by FixitMike »

You can also use the fluting tool with many closely spaced vectors. Here's an example, although it is for an elongated dish: Note that the dish will be larger than the vectors are long by the radius of the cutter, as the cutter determine the path of the center of the tool.
Fluted dish.PNG
These vectors were drawn from the edge to the center. You can use half as many and draw them all the way across the dish for 180° using the "Ramp at Start and End" option.
Last edited by FixitMike on Tue Aug 07, 2018 6:53 pm, edited 1 time in total.
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IslaWW
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Re: Making a circle into a cove---HELP Please

Post by IslaWW »

You can also take one of the dish or dome 3D models, scale it to your needs and then 3D cut it
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dealguy11
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Re: Making a circle into a cove---HELP Please

Post by dealguy11 »

And, just so we cover the waterfront of possibilities, you can make a domed or bowl shape using the Moulding toolpath. The rail is a small circle in the center of the dome/bowl, and the profile is a vector representing 1/2 of the profile of your dome/bowl. In this example the rail is a .01" circle. This allows you to make a profile that is different from the clipart profiles:
Attachments
bowl.JPG
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connalj
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Re: Making a circle into a cove---HELP Please

Post by connalj »

HI everyone.

Thank you so much for all of the assistance but I'm afraid I am still a little lost. I don't have a large Fluting bit so that is out:-)

dealguy11 and IslaWW your ideas look very do-able to me. Can you walk me through each step please? I have only had Vcarve for about 6-months and I have a LOT to learn:-)

connalj
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Re: Making a circle into a cove---HELP Please

Post by connalj »

All,
So I chose to use the 3d clipart path. What else do I need to configure?

Also, do I use a roughing path, then a smoothing path like I would for other 3D items?

3d clip art cove
3d clip art cove

connalj
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Re: Making a circle into a cove---HELP Please

Post by connalj »

I just completed running the 3d part as suggested. By it looks okay on the screen. Is there a way to get rid of the rough rim at the top of the dome seen below? Or do I just need to plan on sanding it?
3d dome cut
3d dome cut

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dealguy11
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Re: Making a circle into a cove---HELP Please

Post by dealguy11 »

1. Add a zero plane (Model dropdown, then "Create Component", then "Add Zero Plane). This will keep the top of the bowl from getting cutting artifacts due to the pixel model when carving--i.e., it solves the roughness at the top
2. You can use a roughing pass if you like. Depends on what you're cutting the dish with and whether you're rastering or using an offset path to carve it. If you're using an offset path, then do rough it because the carving bit will plunge full-depth right into the middle of the model. If you're using a rastering path then it will start at an edge and you may be able to get away without it, especially if you're using a fairly stout bit like a 1/4" ballnose (which is what I'd probably use). I might even use a tapered 1/8" ballnose without roughing, as long as it's rastering.
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connalj
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Re: Making a circle into a cove---HELP Please

Post by connalj »

HI dealguy11,
I do not see where to do that. What am I missing?

Please email me at connal308876@gmail.com and I will send you my phone number so we can chat please:-)

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mtylerfl
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Re: Making a circle into a cove---HELP Please

Post by mtylerfl »

There is a video tutorial in the Vectric Support section of their website. It’s a Horsehead model placed into a recessed dish (the same principle applies to your situation). It explains the how-to of a Zero Plane, etc.

Here is the link:

https://support.vectric.com/tutorials/V ... ideo_id=64
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connalj
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Re: Making a circle into a cove---HELP Please

Post by connalj »

HI mtylerfl,
Thanks for the link. But the video is for Aspire and I have Vcarve. I will ask for Aspire for Christmas. I'm sure the first thing my wife will ask if what can I do with it for the price being so high:-)

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mtylerfl
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Re: Making a circle into a cove---HELP Please

Post by mtylerfl »

Hi,

Yes, the video was made with Aspire. However, it explains how (and why) a Zero Plane is placed into a project that has a recessed dish with its edges at the top surface of the board. The principle (and reason) is the same for VCarve. (You can add a Zero Plane with VCarve too.)

PS - I’ll keep my fingers crossed for you regarding getting Aspire someday!
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