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  #1  
Old 01-05-2018, 11:17 AM
bmc0787 bmc0787 is offline
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Default unfolding a tapered column

Hi All
I have a bar project where I need to make a tapered column thats 13" round at base, 11" round at top and just 24" high. I would like to build this using Vcarvepro. I plan on using 3/8" wiggle board to wrap the column frame and then veneer over top. So basically I would need to have the column unwrapped so I can cut the parts flat . Hopefully you get what I'm trying to get accomplished here or if this is even possible in Vcarve
thanks
Brian
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  #2  
Old 01-05-2018, 11:40 AM
Ger21 Ger21 is offline
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You don't need to "unwrap" anything. Your frame is all just 2D parts. I'd cut rings, with notches for vertical stringers.
You need to draw a section view through the column, to figure out the diameter of the rings, and depth of the notches.
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Old 01-05-2018, 01:47 PM
bmc0787 bmc0787 is offline
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sorry didn't explain properly. the column stucture is fine, its the flattened wrap/veneer layout that I'm after.
Brian
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Old 01-05-2018, 03:09 PM
carasel carasel is offline
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See if this would work for you. This could be drawn in vcarve,
http://craig-russell.co.uk/demos/cone_calculator/
Is wiggle board bendable plywood?
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  #5  
Old 01-05-2018, 03:14 PM
BradyWatson BradyWatson is offline
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See attached DXF of 13" base with 11" top, 24" tall; unrolled/unwrapped into a flat skin for veneering.

Is this what you were looking for?

-B
Attached Files
File Type: zip 11x13x24Unrolled.zip (1.7 KB, 32 views)
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  #6  
Old 01-06-2018, 10:32 AM
bmc0787 bmc0787 is offline
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just what I was after. thank you guys!
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  #7  
Old 01-06-2018, 04:08 PM
UglySign UglySign is offline
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I've used this site for some 1.5"h x 60"l x .040 aluminum barrel straps.
Worked perfect w/ the PDF file

http://www.templatemaker.nl/cone
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  #8  
Old 01-08-2018, 11:01 AM
BradyWatson BradyWatson is offline
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As always, there's more than one way to skin a cat. In this case, I used Rhino. I made 2 circles the given diameters and moved them apart in Z 24". I then lofted the 2 circles to make the tapered skin & told it to unroll the tapered skin flat.

Rhino is like the Swiss Army knife of CAD...it can do a lot of things not possible in 2.5D CAD and you can import/export freely between software you know well while you are learning. It's not good for relief work, but it is great for visualization and even simple tasks like rotating/aligning 3D meshes to XYZ space with precision. You can also split things up with a plane and other tasks for large format work. It's a fantastic tool to have in your arsenal.

I remember years back banging my head against the wall trying to get the 3D sweep right in ArtCAM for a customer's pagoda style lamp he wanted. After 2 days of trying to get the Z modulated properly for the corner 'swoops', I exported the cross sections to Rhino and did the sweeps to perfection in like 5 minutes...Then imported the mesh back into ArtCAM and life was good.

-B
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