Part vs Body

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Vagulus
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Part vs Body

Postby Vagulus » Sat Sep 05, 2020 5:45 am

Please clear up my confusion.

What is the difference between a New Part
Create New Part.png
Create New Part.png (2.99 KiB) Viewed 463 times
and a New Body
Create New Body.png
Create New Body.png (2.91 KiB) Viewed 463 times
? Is a new Part something like a Project in some other 3D Modelling Software (We Do Not Speak Their Names?) while a new Body like a Part within that Project?

Thanks
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vocx
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Re: Part vs Body

Postby vocx » Sat Sep 05, 2020 6:10 am

Vagulus wrote:
Sat Sep 05, 2020 5:45 am
Please clear up my confusion.
...
Std_Part

PartDesign Body
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Vagulus
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Re: Part vs Body

Postby Vagulus » Sat Sep 05, 2020 7:48 am

Hi vocx
Vagulus wrote:
Sat Sep 05, 2020 5:45 am
Please clear up my confusion.
I had read those pages you referenced and what I wrote in the original post was my interpretation of them. I am just trying to find out if I have this right. It's a terminological thing and FreeCAD seems to have its own terminology. My problem is translating terms I understand into FreeCAD-ese. It's like Extrude becoming Pad and Cut becoming Pocket.

So, I'd really like someone who has been familiar with We do not speak their names to confirm (or refute) my question, "Is a new Part something like a Project in some other 3D Modelling Software while a new Body is like a Part within that Project?"

Thanks
"A word to the wise ain't necessary -
it's the stupid ones who need the advice."
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chrisb
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Re: Part vs Body

Postby chrisb » Sat Sep 05, 2020 7:56 am

Please be aware that this is the FreeCAD forum, and that people here may not have much knowledge about another program without even knowing its name.
If you re-read the page about the Part containter you see that it is rather like an assembly which can contain solids or other subassemblies. Bodies are indeed just single solids. Which usually live on top level (small model) or inside of a Part container (big model).

So to answer your question: If a project in some other program is a collection of objects and sub assemblies with its own placement, then the answer is yes.
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Re: Part vs Body

Postby Brutha » Sat Sep 05, 2020 7:58 am

My simple understanding, and the way I use them, is that each have their own co-ordinate system and:

- A body is a single solid object
- A part is a collection of bodies or other parts (or indeed other types of object)

So, basically I use parts to create hierarchical groups of objects.

But I'm not familiar with other CAD systems, so I don't know how that compares!
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Vagulus
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Re: Part vs Body

Postby Vagulus » Sat Sep 05, 2020 8:01 am

chrisb wrote:
Sat Sep 05, 2020 7:56 am
Please be aware that this is the FreeCAD forum, and that people here may not have much knowledge about another program without even knowing its name.
Yes, chrisb, I am aware of that but in this case I was appealing for a response from someone who does have experience with other CAD programs.
chrisb wrote:
Sat Sep 05, 2020 7:56 am
If you re-read the page about the Part containter you see that it is rather like an assembly which can contain solids or other subassemblies. Bodies are indeed just single solids. Which usually live on top level (small model) or inside of a Part container (big model).
It seems my interpretation was correct.
Thanks
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it's the stupid ones who need the advice."
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Vagulus
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Re: Part vs Body

Postby Vagulus » Sat Sep 05, 2020 8:02 am

Brutha wrote:
Sat Sep 05, 2020 7:58 am
My simple understanding, and the way I use them, is ...
Much appreciated.
"A word to the wise ain't necessary -
it's the stupid ones who need the advice."
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cadcam
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Re: Part vs Body

Postby cadcam » Sat Sep 05, 2020 10:16 am

Would it be useful to ask forum members.to.help.by.generating.a.table.to.assist.
understand terminology.from.other.packages.e.g.

Program_______|..Operations___|..Components..|.Single.body.models___|.Combined.items__|'Component' |'Assembly'___|
______________|e.g..hole______|.nuts/bolts____|.e.g..block/bracket___|.e.g..engine______|__Drawing__|Drawing____|
______________|.chamfer______|_____________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
FreeCAD_______|Feature______|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
Solidworks____|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
Creo__________|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
Fusion.360____|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
Catia_________|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
SolidEdge_____|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
NX____________|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
Onshape_______|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
Spaceclaim____|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
BRL-CAD_______|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
Salome________|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
AC.Inventor___|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
Creo.Elements_|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
ZW3D__________|_____________|______________|____________________|________________|___________|___________|
----------------------------------------------------------------------------------------------------------
drmacro
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Re: Part vs Body

Postby drmacro » Sat Sep 05, 2020 10:23 am

Vagulus wrote:
Sat Sep 05, 2020 8:02 am
Brutha wrote:
Sat Sep 05, 2020 7:58 am
My simple understanding, and the way I use them, is ...
Much appreciated.
My advice to new users is ignore the yellow icon.

It creates a container object and is not of interest until the user has a specific reason to use them. I have hundreds of models and no Part objects.

Note, there are reasons to use them in assemblies and the assembly workbenches use them a lot. There are also workflows in a basic file where they can be used to compartmentalize the feature tree.
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Vagulus
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Re: Part vs Body

Postby Vagulus » Sat Sep 05, 2020 9:57 pm

drmacro wrote:
Sat Sep 05, 2020 10:23 am
Note, there are reasons to use them in assemblies and the assembly workbenches use them a lot. There are also workflows in a basic file where they can be used to compartmentalize the feature tree.
I think that is why I am interested in them. ;)
Thanks
"A word to the wise ain't necessary -
it's the stupid ones who need the advice."
Bill Cosby