Surface Modeling or Sculpting

ebara0003
Contributor
Contributor

Surface Modeling or Sculpting

ebara0003
Contributor
Contributor
Hello,
I would like to represent a chair seat with Fusion 360, and with the intent to use a CNC to rough shape it. My lack of knowledge is the area of designing the seat which isn't square/straight lines, and it changes in xyz.
Attached is an example of a finished seat .
 
I got two advices: one to use Surface modeling and one to use Sculpting. I'm not familiar with either methods, and am looking for the correct/easiest/fastest way. Any advice from someone who is familiar with both approaches?
 
Thx Eitan
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davebYYPCU
Consultant
Consultant

If you know how to sculpt, then it might be quicker, but not if you have to learn that sort of modelling.  Surface Loft is quick.

 

crvdseatdb.PNG

 

Might help.....

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rushabhthakkar_910
Advisor
Advisor

@ebara0003, Sharing a tutorials for both surface modelling and sculpting..!!

  1. https://www.youtube.com/results?search_query=fusion+360+sculpting
  2. https://www.youtube.com/results?search_query=fusion+360+surface+modelling

 

Thanks and Regards,


Rushabh Thakkar.


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Likes are always welcome.


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TrippyLighting
Consultant
Consultant

@rushabhthakkar_910 I know you want to help but consider this:

 

1. The OP asked for feedback from folks who have experience in both, the form and surface environments. Currently there are only two users who regularly contribute here and who that applies to. That would be me and @laughingcreek 

 

2. I personally would be offended if another user posts the results of youtube searches as a solution, because it assumes I don't have the basic intelligence to perform these searches myself!

 

3. The danger with posting un-curated link collections is that they may contain tutorials that aren't so great. That is definitely the case here!


EESignature

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rushabhthakkar_910
Advisor
Advisor

@TrippyLighting, I would like to say many things over here. But feel that it is better to not say. So I'll keep quiet.

 

But still a few mentions.

Thanks for your wonderful speech on how we other users are useless here. And should stop helping other on the forum. (Regradless of the post being helpful or not)

 

So you can continue helping others. And we (others), moderately experienced persons will stop posting. Because This forum belongs to you. 

(Great speech to motivate other user's. 👏👏)

Thanks and Regards,


Rushabh Thakkar.


Please use the Accept Solution button to mark any posts that provide the answer or solution. 


Likes are always welcome.


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laughingcreek
Mentor
Mentor
Accepted solution

@ebara0003 wrote:
...I would like to represent a chair seat with Fusion 360...I got two advices: one to use Surface modeling and one to use Sculpting...

Either approach might be of use.  the approach you take will depend on a number of factors, mostly related to the details of the seat.  I have made many seats and chairs/stools, and sometimes use straight surfacing, straight "sculpting" (or t-splines using original terminology), and combinations of both.

the picture you posted probably lends itself to using straight surfacing, but using an over built t-spline surface might be of use also.  I've attached a quick example of an over built surface technique. 

 

OTOH, some shapes and transitions can be hard to capture with a surfacing approach, such as this stool seat pictured below.  this was done with a t-spline body-

laughingcreek_0-1671385817228.pnglaughingcreek_1-1671385820664.png

 

this was done with an extrude and a revolve-

laughingcreek_2-1671386021090.png

 

and this was done with various surfacing techniques.  you can see the results are similar to using the overbuilt t-spline surface approach.  This model was done as an example for someone on the forums some years ago.  i'll attach it also.

laughingcreek_3-1671386296378.png

 

either way there is a bit to learn.  one of the pitfalls of using t-splines is the perceived simplicity.   There is more to using them than is apparent at first. 

I think posting specifics about the final design will probably yield more help and suggestions.

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TrippyLighting
Consultant
Consultant

@rushabhthakkar_910 sometimes feedback reads harsher that it was meant. I did not mean to offend you.

 

I do admit that am perhaps overly concerned with the quality of the feedback that we provide on this forum.

I very, very rarely offer advice I have not personally tried out!

 

If there is an area I feel I don't have the necessary expertise in, I tag a user whom I know has that expertise. There are many areas of Fusion 360 I have no expertise in, but I refuse to offer untested workflows and pure opinion as opposed to knowledge.

 

  


EESignature

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ebara0003
Contributor
Contributor

As one who used these two environments,  what would be your suggestion.  Seems you ARE the person I was hoping to get an answer from.

 

Thank you in advance

Eitan

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ebara0003
Contributor
Contributor

Hello,

First, Thank you for you answer!!

The seat I am looking to design is similar to your last image, with the exception that the back of the seat (one's bottoms area) is lower than the thigh area.

If this changes or you have any additional information please let me know!

Thank you 

Eitan Barazani

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TrippyLighting
Consultant
Consultant

The screenshot you provided was very small, but that object looked to me like a candidate for T-Splines.

If you look through the screenshots and the files @laughingcreek provided in his post, what do you feel resembles your particular project best ?

As long as you don't disable the timeline, surface models are parametric and their development can be followed by stepping through the timeline one feature at a time. 

T-Splines on the other hand are direct modeled. So they don't give the process away that was used to create them.

 

If you feel a T-Spline based approach suits your needs better, I can create a screencast.


EESignature

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ebara0003
Contributor
Contributor

Thank you for your input. I will spend time studying the surface modeling.

 

The last seat is the closest one to the one I want, except the the back part of the seat should be lower than the front, the thigh area.

 

Regards

Eitan 

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ebara0003
Contributor
Contributor

Hi,

 

In the Basic Lofted Seat example, did you use surface modeling? I see that you defined 3 spline sketches.

 

This is the closest to my needs.

 

Thanks

Eitan

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laughingcreek
Mentor
Mentor

the "Basic Lofted Seat" model does not use a T-splines.  (you can tell b/c there is not t-spline in the timeline).  Both of the models I attached previously can produce near identical results.  it just comes down to which modeling methods your more comfortable with.

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