explicit definition

[carlo alberto 21]

Good morning, everyone.
I apologize in advance for my ignorance but I am now facing the surfaces in cativa v5.
I'm trying to replicate a model of a very irregular plastic tube and I came across explicit plans.
looking in the plan creation menu does not appear to me this option and I do not know how to replicate them.
I wanted to ask you if someone can explain to me how to do it and what are the benefits they bring.
Thank you.
car

 

[AlessandroC.]

Hi, carlo.
I never came across this specific case, so I suggest you wait for someone more prepared on the subject.

by memory explicit geometries are obtained if, during the creation of geometry (in your case a plan), you have activated a specific command: it is called "create a reference" or "insert a reference" and had as an icon the caia tree with lightning.
If not err, explicit geometry is nothing but a "non-changeable" geometry, and in which one on the logical tree should not have the "+" symbol with all parameters/properties.
I assume the advantage of both having "fixes" in the part, which cannot be moved (as if they were the plans of the absolute reference frame of the file).
Honestly, in my work, I do not see the need to use them, but surely there are cases where they come back useful

If I can be curious, what do you mean by "very irregular" geometry?

 

[carlo alberto 21]

hi alessandro
I confirm that the plan icon has lightning as you say and is not editable.
after the message I tried to replicate the tree of the starting file without these plans and I managed to complete the model, so you're right when you say it's just a reference.
is an aspiration tube of a boiler that passes through various components so it tightens a lot in the middle section and has two non-axial exits with round section.
I wrote very irregular but perhaps only for me that I am accustomed to very geometric shapes. ?
thanks for the answer
car