complex surface shelling
All  1-6  7-17

Previous
Next
 From:  Michael Gibson
1802.7 In reply to 1802.1 
Hi Olga,

> Is it possible to produce something like "smart shelling" - to give
> some thickness to this or similar surface?
> So that planes that interfere with each other would
> merge and create one solid.

It's possible in theory, but unfortunately it is a very difficult task.

When you start using "smart" to describe an operation it can often be something that is very difficult to translate into a software algorithm.

Software unfortunately is totally not "smart" - it only does exactly what it is told and it is very difficult to translate things like human judgement into the kind of explicit instructions that are required for program code...

- Michael
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  Michael Gibson
1802.8 In reply to 1802.6 
Hi Olga,

> If you do the same with sphere and cone and join/boolean union
> them together to create one solid - will it work? It does not for me -
> I might be doing something wrong

Do you have the .3dm model file for this that you can post please?

It's pretty difficult to follow along just from the descriptions alone.

This may be something that will confuse the booleans and you may need to switch to a more surface style of modeling - that's where you use Edit/Separate to break solids down into individual surfaces and work on trimming surfaces one at a time to produce what you need.

It's kind of a more "low level" approach than the boolean type operations, but it can let you make progress if you are having problems with the booleans.

Similarly you may be able to make some progress by breaking things into individual surfaces and then using Offset to build some pieces to work off of to do further trimming, etc..., instead of trying to use Shell which will get confused by the sorts of overlapping pieces.

- Michael
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  DannyT (DANTAS)
1802.9 In reply to 1802.8 
Michael,

> Do you have the .3dm model file for this that you can post please?

That's the one in the first post.

Cheers
~Danny~
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  Michael Gibson
1802.10 In reply to 1802.9 
> That's the one in the first post.

I guess it sounded like Olga had done some other steps to the sphere and cone and was having a problem with booleaning after those steps?

If so then it could help to see that result more specifically...

- Michael
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  DannyT (DANTAS)
1802.11 In reply to 1802.10 
Hi Michael and Olga,

> I guess it sounded like Olga had done some other steps to the sphere and cone and was having a problem with booleaning after those steps?

That's the bit I don't get, if you do a offset/shell at 1.5-2mm with this piece the main walls of the triangle piece would engulf the offset of the
sphere and cone so the offset of those features wouldn't be necessary, or I am missing something here ?

Cheers
~Danny~
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  DannyT (DANTAS)
1802.12 
This is what I mean, I took a section and offset the curves at 1.5mm (highlighted)
the result would be a small pocket in the center of the piece as shown in between the red lines
because the sphere and cone offset would be trimmed to the bottom of the piece, is this correct
in what I'm saying ?



Cheers
~Danny~
Attachments:

  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  Michael Gibson
1802.13 In reply to 1802.12 
Hi Danny, yeah I think that is correct. I'm just not quite following along so well with some of the later stages being described there, having a model to look at to go along with a description is always helpful to clear things up.

- Michael
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  malvin
1802.14 
Hi Michael hi Danny

I attach the file where I tried to shell the surface of my design for a pendant
I could not shell the whole thing so I blew up the surface and shelled it in parts but could not join them together and remove extras (I tried Boolean union, merge)
I did not shell two small top corners so this has to be fixed also

Please take a look – you might have an idea how to merge them together and remove extras

Here the thickness is 1 mm.

-Olga-
Attachments:

  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  DannyT (DANTAS)
1802.15 In reply to 1802.14 
Hi Olga,

It's a bit of work, spent about 20 min on it but it was a combination of offsets, untrims, trims, booleans, separations and a front end labotomy ;)
If you really, really need a step by step explanation (please say no) ;) then I'll need some time.

It's basically what Michael said earlier Here about 'low level' approach.
I was going to give up after 10 min but it got the better of me so I had to finish it.

Cheers
~Danny~

EDITED: 26 Jan 2010 by DANTAS

  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  malvin
1802.16 In reply to 1802.15 
Hi Danny
No I do not a step by step explanation
That looks exactly I want to achieve.
Did you use my latest file or the earlier one with only the basic surface with no thickness?

-Thanks - Olga-
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
 From:  DannyT (DANTAS)
1802.17 In reply to 1802.16 
Hi Olga,

> Did you use my latest file or the earlier one with only the basic surface with no thickness?

this one 0473-9.3dm

Cheers
~Danny~
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged
 

Reply to All Reply to All

 

 
 
Show messages: All  1-6  7-17