Hi 4rw1n,

> THIS WHAT I NEED I DRAW IT MANUALY BUT I THINK NOT CORRECT..

Please post the .3dm model file with those objects.

- Michael

Here is a quick "Curve to Curve Flow"



If you rotate the object, you can get the curve to unwrap the way you show. Depends on how you want the edges to cut...

THis is the rotation i was talking about to get the edges you want for a cut

Wish Moi3d will get unfold surface or 3d model unfold options in the future.

@Burrman fell across your YouTube channel. Amazing. Are you possibly available for custom video tutorials? Cost? Thank you!

Hi Nate,
Sorry, i don't do that… hope you find something.

somethimes i cant separate line

The line is a single entity folding over on itself with no segments. There is no "separation.

I am not sure how to arrange to Unfold that particular shape. For me it is starting to get into the non developable arena and want to go to software meant to do that.

Maybe Michael can direct unrolling that cylinder?

Here is a video where I use Pepakura to unfold it. But you are now "dicing up your model". So you will have to make a determination on tolerances and accuracy

Hi 4rw1n,

re:
> somethimes i cant separate line

It looks like using a closed curve for the base curve is problematic because a point that maps onto the seam point of the base curve is equally close to 2 locations on the unwrapped line.

I think you can solve this by splitting it in half and processing each half separately:







- Michael

And just to clarify on how you do the unwrap using curve flow, you have 3 pieces:



#1 is half of the top edge of the cylinder. This is the object that you will give as the object to deform, select it before running Flow.

#2 is half of the bottom circle of the cylinder. This is the base curve for the flow.

#3 is a line that has the same length as the half bottom circle, this is the target curve for flow.

Usually Flow is done with a straight line base curve onto a curved target but you can do it curved to straight as well.

This will be the result, it is floating above the line, you do the other halves in a second run of flow:



- Michael

Aha!!!

Oh and for that line above, the #3 - you don't actually need to make it the line the exact same length as the arc as long as you don't enable the "Stretch" mode in the flow options.

When Stretch is off it will match "distance traveled along base curve" to the same distance traveled along the target curve, automatically extending if needed.

When Stretch is on it will match "percentage traveled along base curve" to the same percentage traveled along the target curve.



- Michael

thank u guys.. now i need unfold sheet metal ..is there sript..

Hi 4rw1n,

> thank u guys.. now i need unfold sheet metal ..is there sript..

Sorry no none that I am aware of.

You might check out FreeCAD which has a sheet metal module, or Pepakura Designer.

- Michael

Or the free FormZ Free ... https://autodessys.com/formz-free/

"""""""Or the free FormZ Free""""""""""

Can you show us how to unfold his part he posted with form-z free?

According to their web site here:
https://autodessys.com/formz_comparison/

It says that "Unfold model with tabs and labels" (under Product Design) is in the pro version, not in the free version.

Also I seem to remember it's not really for sheet metal, it's for papercraft type stuff like Pepakura Designer.

EDIT:
https://s3.us-east-2.amazonaws.com/assets.autodessys.com/manuals/formz10/formZ_Pro/responsive_html/10146_Unfold.html

Looks like it can do also NURBS unfolded as NURBS when there are developable surfaces. So that might work ok (in pro version) for sheet metal models too. For polygon mesh objects it does Pepakura Designer type stuff with making tabs.

- Michael

Hi 4rw1n,

please find attached "unfolded" file, where you can find unfold part.

It has been used flow command inside MoI by technique described here:

Flow as Unfold tool !
https://moi3d.com/forum/index.php?webtag=MOI&msg=7406.1

Hope this helps.

Mik

In free version that this sort of Unfolding





Unfold : Last function on the right!











So must convert 3DM in OBJ for example

So ;) Remark that NGons are accepted!
Maybe not the same result wanted! :)

Hi Pilou, is that the current Form-Z free version that you are running there?
(https://autodessys.com/formz-free/)

Or are you running the bonzai3d app which I think has been discontinued?

- Michael