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digitalphaser  
#1 Posted : Saturday, April 21, 2018 12:48:28 PM(UTC)
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Question to all VC/Shark users. What technique would you use to round edges between cover surfaces?

Below is a small example(not real work). I would like to get the right smooth surface, to what I can apply a Thiken Solid tool.

Thanks!
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Tim Olson  
#2 Posted : Saturday, April 21, 2018 10:03:05 PM(UTC)
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Do you need constant radius on all edges or will variable radius work? Approximately what size radius are you targeting?


Tim

Edited by user Sunday, April 22, 2018 12:33:30 AM(UTC)  | Reason: Not specified

Tim Olson
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Jolyon  
#3 Posted : Sunday, April 22, 2018 1:13:03 AM(UTC)
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... As established in Dean's car modelling thread, rounding when there is a single surface on one side and multiple surfaces on the other ... doesn't see to work, and appears to be a significant omission !

[personally I would stitch it into a solid - then both rounding and shelling to thickness is easy]

Jol

Edited by user Sunday, April 22, 2018 1:14:45 AM(UTC)  | Reason: Not specified
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thanks 1 user thanked Jolyon for this useful post.
GARLIC on 4/22/2018(UTC)
digitalphaser  
#4 Posted : Sunday, April 22, 2018 10:25:35 AM(UTC)
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Originally Posted by: Tim Olson Go to Quoted Post
Do you need constant radius on all edges or will variable radius work? Approximately what size radius are you targeting?


Tim


In this case, it does not matter. It is important to me to understand how this can be realized. What techniques and tools can be used here? This should be something like this.
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digitalphaser  
#5 Posted : Sunday, April 22, 2018 10:33:02 AM(UTC)
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Originally Posted by: Jolyon Go to Quoted Post


[personally I would stitch it into a solid - then both rounding and shelling to thickness is easy]

Jol

Yes, but if it was easy... Solid Blending does not work.
1. It does not give a clean surface.
2. Not all edges can be rounded.

As you know, Blend Edge tool is also pretty capricious.

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Tim Olson  
#6 Posted : Sunday, April 22, 2018 10:58:36 AM(UTC)
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You might consider a fixed width blend. See attached.
Tim

Edited by user Sunday, April 22, 2018 10:59:19 AM(UTC)  | Reason: Not specified

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digitalphaser  
#7 Posted : Sunday, April 22, 2018 12:18:39 PM(UTC)
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Thank you Tim. It's a very interesting method. I've never used Fixed Width Blend before. This will come in handy.

Some problems.

1. This works correctly only with four edges. In my case, the bottom edge is much wider than three top edges(see my image above). How in this case?

2. It is not always possible to stitch surfaces to solid. Fixed Width Blend tool does not work with joined surfaces.
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Tim Olson  
#8 Posted : Sunday, April 22, 2018 2:55:31 PM(UTC)
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>>1. This works correctly only with four edges. In my case, the bottom edge is much wider than three top edges

Blending failures are usually due to transitions and curvature related issues. Attached is an example where I first blended the vertical edge with a high value (15mm) and then two more fillet blends with 4 mm.

If you do multiple radius blends as part of a network, it's usually best to do the largest one first.

Tim

Edited by user Sunday, April 22, 2018 2:58:02 PM(UTC)  | Reason: Not specified

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Tim Olson  
#9 Posted : Sunday, April 22, 2018 3:15:40 PM(UTC)
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>>It is not always possible to stitch surfaces to solid. Fixed Width Blend tool does not work with joined surfaces.

Try turning off the "Closed Volume" check in the stitcher. Blending an edge just requires the edge be shared between two surfaces.

Left : four open surfaces with fixed width blends
Middle : nine surfaces joined into one surface
Right : surface thickened into solid

Tim

Edited by user Sunday, April 22, 2018 3:21:45 PM(UTC)  | Reason: Not specified

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digitalphaser  
#10 Posted : Monday, April 23, 2018 3:43:44 AM(UTC)
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Originally Posted by: Tim Olson Go to Quoted Post
>>It is not always possible to stitch surfaces to solid. Fixed Width Blend tool does not work with joined surfaces.

Try turning off the "Closed Volume" check in the stitcher. Blending an edge just requires the edge be shared between two surfaces.

Left : four open surfaces with fixed width blends
Middle : nine surfaces joined into one surface
Right : surface thickened into solid

Tim


Many many thanks Tim. This is a very big advance and it's very close. I decided to make more cleaner surface. Unfortunately I can not close this hole. I used Tangent Cover Surface.
In addition, not all surfaces allow thickening. VCP file is attached.
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jdi000  
#11 Posted : Monday, April 23, 2018 6:38:41 AM(UTC)
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Originally Posted by: digitalphaser Go to Quoted Post


I decided to make more cleaner surface. Unfortunately I can not close this hole. I used Tangent Cover Surface.
In addition, not all surfaces allow thickening. VCP file is attached.


Hello

Do you have the file before this state?

Regards

Jason
Windows 11, 10
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Tim Olson  
#12 Posted : Monday, April 23, 2018 8:45:26 AM(UTC)
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If you replace one of the cover surfaces with a skin, you can then get constant radial blends to work.

Tim

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Jolyon  
#13 Posted : Monday, April 23, 2018 8:58:32 AM(UTC)
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Tim >> replacing the cover surface with a skin surface gives you resolution

Is there logic to this .. a rule perhaps ?

... or are you just trying different stuff (as any of us might) on your quest for a solution
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digitalphaser  
#14 Posted : Monday, April 23, 2018 9:36:20 AM(UTC)
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Originally Posted by: Tim Olson Go to Quoted Post
If you replace one of the cover surfaces with a skin, you can then get constant radial blends to work.

Tim



Yes. Thank you Tim!!! This solution is more more better. I would not be able to guess by myself.
It's not very intuitive. ;)
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Tim Olson  
#15 Posted : Monday, April 23, 2018 10:00:54 AM(UTC)
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>>or are you just trying different stuff (as any of us might) on your quest for a solution

Trying stuff. Once I saw fixed width work, I wanted to understand why constant didn't which included attempting to manually blend. Manual blends seemed to fail with the same surface so I untrimmed/show points to take a peek at the underlying surface.
Next will check with Spatial regarding what kind of options are available for covering.

Tim


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