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Problems with the Skin Solid Funktion - Never get a even surface distribution at the corners
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AndreasH  
#1 Posted : Tuesday, January 2, 2018 7:30:58 AM(UTC)
AndreasH

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Hi guy´s sorry for my english I´ll give my best :-)


I want to create a Solid from two polygons with different Z height wich I have created from arc & lines there
is no way to get an even distribution of the surface around the edges.
I tried several ways like changing the direction of the acrs and lines or convert arcs to beziers.
Also i tried to use differnt paramters to create the skin solid in the Options menue.

I have attched some images to show yo my problem.

AndreasH attached the following image(s):
skinsolid1.jpg (75kb) downloaded 4 time(s).
skinsolid2.jpg (66kb) downloaded 1 time(s).
skinsolid3.jpg (81kb) downloaded 2 time(s).
skinsolid4.jpg (80kb) downloaded 2 time(s).
skinsolid5.jpg (83kb) downloaded 3 time(s).

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GARLIC  
#2 Posted : Tuesday, January 2, 2018 8:01:27 AM(UTC)
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could you upload the basic geometry / boundary curves ?
for some testing ...

regards
G.
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AndreasH  
#3 Posted : Tuesday, January 2, 2018 8:16:48 AM(UTC)
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This is the basic geometry / Units Metric mm

Thanks

Andy
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basicTest.vcp (8kb) downloaded 3 time(s).

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Jolyon  
#4 Posted : Tuesday, January 2, 2018 8:21:42 AM(UTC)
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I would add the radius blends as features afterward !
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AndreasH  
#5 Posted : Tuesday, January 2, 2018 9:20:44 AM(UTC)
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Thank you !

This comes very close with elipytical Fillet, but how can i prevent the undersite edge to get rounded with.?

AndreasH attached the following image(s):
skinsolid6.jpg (103kb) downloaded 5 time(s).

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Jolyon  
#6 Posted : Tuesday, January 2, 2018 1:45:08 PM(UTC)
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Well done ...

Press the option key (Mac) within the elliptical blend tool

Turn OFF 'automatic chaining' and select just the edge you want

Jol
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AndreasH  
#7 Posted : Tuesday, January 2, 2018 3:37:25 PM(UTC)
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Sorry Jol ... unchecking this option doesnt´t help.
I tried the variable blend linear funktion, but it doesnt´t follow the inner arc exactly .

Andy
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jdi000  
#8 Posted : Tuesday, January 2, 2018 4:28:14 PM(UTC)
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Hello Andy

Is this what you are looking for see attached file.

Regards

Jason
File Attachment(s):
basicTest2mod.vcp (3,843kb) downloaded 1 time(s).
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test2.PNG (102kb) downloaded 7 time(s).

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Windows 11, 10
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AndreasH  
#9 Posted : Tuesday, January 2, 2018 5:03:50 PM(UTC)
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Hi Jason !

Thank you !

The corners are looking good, but it seems that the surfaces along are concave or am I wrong ?

I need flat ( plain ) surfaces along the sides

Regards
Andy

Edited by user Tuesday, January 2, 2018 5:11:52 PM(UTC)  | Reason: Not specified
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Jolyon  
#10 Posted : Tuesday, January 2, 2018 6:54:40 PM(UTC)
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Then - best way is to build all your surfaces manually as 4 sided patches, then stitch it together into a solid !

Jol
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AndreasH on 1/3/2018(UTC)
jdi000  
#11 Posted : Tuesday, January 2, 2018 9:02:47 PM(UTC)
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Andy

Here is another try see if this is what you wanted.

Regards
Jason
File Attachment(s):
basicTest2mod2.vcp (3,940kb) downloaded 4 time(s).

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AndreasH on 1/3/2018(UTC)
digitalphaser  
#12 Posted : Wednesday, January 3, 2018 4:07:54 AM(UTC)
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If I understood correctly, then for corners I would use a Skin Surface tool Arc to Point. Then stitching to solid.
File Attachment(s):
skinning.vcp (336kb) downloaded 4 time(s).
digitalphaser attached the following image(s):
skin1.jpg (84kb) downloaded 2 time(s).
skin2.jpg (94kb) downloaded 2 time(s).

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AndreasH on 1/3/2018(UTC)
Jolyon  
#13 Posted : Wednesday, January 3, 2018 8:16:50 AM(UTC)
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Thing about geometry is - there are infinite possibilities !

You will likely have to try several approaches to get the answer you want

Experience helps greatly with this

You're doing great !
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rockyroad_us  
#14 Posted : Wednesday, January 3, 2018 10:52:23 AM(UTC)
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You could try the loft surface command with 0 bulge to give flat surfaces. In the corners, you need points however. so you loft between the curve and a point.

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AndreasH on 1/3/2018(UTC)
AndreasH  
#15 Posted : Wednesday, January 3, 2018 12:09:24 PM(UTC)
AndreasH

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Thank you all for your great tips.

I got it now with the tip from digitalphaser, thats exactly the best result for me.
There are a lot of functions left, that I have to learn.

greetings from germany

Andy
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