surface connection

[stefanoart]

Good morning to all,
I would like to collect these 2 surfaces.
I tried with blend fitting on surfaces, but the result, however the best, is not yet what I wanted.
My need, in addition to fitting the surfaces, is to follow the "external" edges and to avoid that between the merged surfaces the "salt" is formed (I don't know how to explain the junction point between the 2 RF, when they do not follow the same direction).
I tried with mesh of curves, binary surfaces. . .
I'm stuck. .
allego file
thanks for suggestions

 

[giovanni.a]

Probably someone will give you more in-depth and correct answers.
I believe that a part of the problem lies in the starting surfaces little "clean" (I don't know how to define them differently), especially that of the heel, in the front tip and in the fact that it tends to close down.(I think it is difficult to get a continuous surface, perfectly tangent than this part.
I tried with sweep 1 track, as from images I attach.
I don't know if it's okay for you.

 

[Fulvio Romano]

I think it draws a four-sided surface (or two surfaces, if you cannot) and plays on the length and degree of tangences.
I only help you conceptually, because I don't use rhino and I can't tell you the exact command; but I know it's the same as the software I use.

 

[sail]

I don't have rhinos under my hand now but are you sure that the curves that generate the joint are tangent to the given surfaces? I think the problem is there. at the limit I would try to cut your surfaces with plans where you want to lie your reference curves, generate locally the curves that define the relaying surfaces and use these to impose tangency.

I hope you understand, I know I'm not chairo in writing. . .

 

[Giorgio Mandelli]

Good morning to all,
I would like to collect these 2 surfaces.
I tried with blend fitting on surfaces, but the result, however the best, is not yet what I wanted.
My need, in addition to fitting the surfaces, is to follow the "external" edges and to avoid that between the merged surfaces the "salt" is formed (I don't know how to explain the junction point between the 2 RF, when they do not follow the same direction).
I tried with mesh of curves, binary surfaces. . .
I'm stuck. .
allego file
thanks for suggestions

curves are almost all useless; it is not commands; One is worth the other. you need to shape the curves properly. or:

1 - curves must be intersected
2 - the domain should, if possible, respect patches to 4 sides
3 - avoid unnecessary "tensions". there are redundant sections that make it difficult to get "smooth" surfaces
4 - control the tangences to prevent surfaces from producing strange artifacts, type of unsolicited division lines
5 - draw the curves following the shape of the shoe
6 - if it is a reverse engineering do, gross, as the example attached
View attachment prova scarpa.zip

ciao

 

[mariuss.r]

Good morning to all,
I would like to collect these 2 surfaces.
I tried with blend fitting on surfaces, but the result, however the best, is not yet what I wanted.
My need, in addition to fitting the surfaces, is to follow the "external" edges and to avoid that between the merged surfaces the "salt" is formed (I don't know how to explain the junction point between the 2 RF, when they do not follow the same direction).
I tried with mesh of curves, binary surfaces. . .
I'm stuck. .
allego file
thanks for suggestions

I think that's the approach that's not right.
I agree with the setting, although I prefer to create a unique surface for reasons of comfort and simplicity in the sucessive phases (offset ec..ec. )

Unfortunately, it's a long time that I'm no longer in the footwear industry, and I found only one file to post as an example, see jpg and zip attachments related to a form for a baby box (but the substance doesn't change much).

 

[giovanni.a]

Sustain if I fit. I tried to respond, as I could, to the problem of stefanoart, but your answers are also useful to me, that sometimes I find myself in similar situations: I am not clear about the concept at point 2 of giorgio mandelli and I would ask both (giorgio and mariuss) if you could briefly indicate the two of your procedures.
Thank you.
Thursday

 

[Giorgio Mandelli]

Sustain if I fit. I tried to respond, as I could, to the problem of stefanoart, but your answers are also useful to me, that sometimes I find myself in similar situations: I am not clear about the concept at point 2 of giorgio mandelli and I would ask both (giorgio and mariuss) if you could briefly indicate the two of your procedures.
Thank you.
Thursday

on point 2 I mean that we must always try to maintain a certain regularity in the way in which the curves are drawn. possibly always at 4 sides; on certain occasions you can use grills on the sides while you have to avoid like peste those on 3 sides

the model shows how a shoe shape should not be modeled
View attachment show-surf.zip

 

[mariuss.r]

on point 2 I mean that we must always try to maintain a certain regularity in the way in which the curves are drawn. possibly always at 4 sides; on certain occasions you can use grills on the sides while you have to avoid like peste those on 3 sides

the model shows how a shoe shape should not be modeled
View attachment 17325

Bye-bye

I saw that you used xor rapidform to reverse the shape, I had stroked the idea of buying it (when I was still reversed).

How are you with that program?

 

[stefanoart]

Hello, thank you all for the information you gave me.
I didn't really care much about the tangency of the curves, so I had to expect some defects.
I will clearly try to be more precise and see if the results improve.
I was interested however to use that type of curves for the construction of that form.
I thank you very much for the technical suggestions, but I have no clarity, especially 2 and 3 (what do you mean by "tensions"? ).
Thank you.

 

[Giorgio Mandelli]

Bye-bye

I saw that you used xor rapidform to reverse the shape, I had stroked the idea of buying it (when I was still reversed).

How are you with that program?

Hi.
I feel good for a number of reasons. the main is that I can reason as if you were using a real cad and so, the advantage lies in the workflow rather than in the actual commands. for the rest always depends on what you have to do...for certain activities it is enough and also advances rhino reverse while for others it is better to avail of tools that facilitate a little life seen and considering that the reverse done wisely is always a "work" that makes it miss a lot of time

 

[Giorgio Mandelli]

Hello, thank you all for the information you gave me.
I didn't really care much about the tangency of the curves, so I had to expect some defects.
I will clearly try to be more precise and see if the results improve.
I was interested however to use that type of curves for the construction of that form.
I thank you very much for the technical suggestions, but I have no clarity, especially 2 and 3 (what do you mean by "tensions"? ).
Thank you.

Hello, I try to explain
misura 3d - mesh stl
realized surface -
example of how curves run. the result is a good quality surface

 

[Giorgio Mandelli]

When you "sleep the [Bleep] magic button, you get a patchy surface. as you see the result is definitely poor. Can you be okay? Boh, you decide... on certain occasions the autopatch can serve you but most of the time helps commercials to sell the reverse software by telling the customer that just a click to get a math already ready to send to the cam

the "tensions" or better forcings are everywhere present. .in fact you notice a patch grid that does not have a harmonious pattern. . .

[Bleep] is a clear reference to this...:biggrin:http://www.youtube.com/watch?v=8wsz3wbcwq4