Create a single loft surface from tis 2 sections,

[pedro_babo]

See the fallowing picture. It contains 2 sections that should make a simple loft.

See the fallowing video has I struggle with this 3rd section appears.

How can I get only 2 profile?

The attached F3D file contains the necessary data.

Regards,

[jeff_strater]

please share your design here.  One thing that I can see from the image is that there are a LOT of spline fit points.  You'd be better off with much fewer points in your curves.

[pedro_babo]

I thought i Hade attached the data.

[jeff_strater]

for some reason, I am unable to open this design - I even downloaded it twice, but Fusion is unable to open it for me.  Do others see the same thing?

[pedro_babo]

uploading again

[TrippyLighting]

@jeff_strater Yes, I see the same thing.

[jeff_strater]

I was able to open the design once I updated Fusion (I'm away from home, and the internet here is terrible...).  These curves have gaps in them:

These curves are really not very good.  If it were me, I would refit the curves using a single Fusion spline.  You could try to close all the gaps, and probably get some result, but I think re-fitting the curves is the better approach.  Here I took about 3 minutes to do a very simple re-fit, and was able to get a result:

Taking some more care will get better results

[pedro_babo]

Hi Jef. Thanks for the advice.

I was looking at the model. By "re-fitting the curves" you mean manually place points to fit the necessary underline shape,
I´ve checked Lines and arcs could be used for this also. Witch produce a more accurate shape.

Is there any way to re-fitting the curve automatically specifying tolerance or number of points?
Is there a way to merge all the curves into only one fixing the coincidence problem?

[jeff_strater]

@pedro_babo - unfortunately, there are no automatic refitting tools in Fusion.  You will have to do this manually, I'm afraid.  You can also try to repair any breaks in your original curves, but that might actually be harder, and will likely produce lower-quality surfaces.

[pedro_babo]

 @jeff_strater Thanks for the advice. 

I think that:

For the task of refitting or reengineering parts the ability to turn Curves/sections into a profile of tangent arcs/lines and a profile of arcs/lines in to curves and the ability of refit the points of one curve at a given tolerance could help on more accurate/controlled refitting of existing shapes. Leading of course to faster  final result.

Same result, less time spent, more profit.

Regards,