Hey guys,
I´m sorry to start the next thread because of a fillet fail.
I tried to create the sunglasses as told in the tutorial "sunglasses 3D with flow" on YouTube. When I made the second flow, my frame got twisted. Unfortunally I don´t know why and how to solve it.
So I made some glasses in my own way with boolean operations. At the end I wanted to fillet the frames, but at some points I just can make a very small fillet. I watched many tutorials and tips to fix these fillet problems, but I still don´t know how in this case.
I made some pictures for you to show the flow and the fillet problem.
Picture 1: twist with flow: the frame in the middle for the nose is very wide.
Picture 2-4, look at window "right": These edges got problems with fillet. I just can make a little fillet of 0,05 cm...

I will send you the pictures and the data.

I´m very grateful, if someone could look at my problems!

Best regards from Hamburg

Koi

@koi

I tried to create the sunglasses as told in the tutorial "sunglasses 3D with flow" on YouTube. When I made the second flow, my frame got twisted. Unfortunally I don´t know why and how to solve it.


Hi koi :)

That's not a tutorial but a workflow that show one of many ways to get a shape like that
It doesn't mean that work for all sunglasses...that's obvious
some suggestions:
-draw sunglasses ? set units to millimeters not centimeters
-draw lines as clean as possible using less points you can
-draw a simmetry line guide and use it as reference ALWAYS !
-if you need more points,use rebuild points function before extrude,it will avoid unwanted seams on your solid,difficult to fillet
-you can't expect to fillet everything,everytime,you must have good conditions for filleting



I did a try on your file
rebuilt lines and flowed the frame using line to line option
if nose area is too large,move flow noise line points closer to simmetry line
if it's not enough,draw a lower nose frame area
file attached below with all steps
take a look at the points of the lines i rebuilded and cleaned


Here is 11years ago original post...and still here :)
http://moi3d.com/forum/index.php?webtag=MOI&msg=4471.1

M

one more:
Flow using -surf to surf - mode+projective option

I did a little variation on the flow surf target close to the stems (temples) area that's straight and not curved.
You can model the hinge


















Happy Modeling :)

M

Hi Koi, for the flow part you wrote:

> Picture 1: twist with flow: the frame in the middle for the nose is very wide.

It looks like it's happening because your base shape has the middle nose area some distance away from the base plane. It's just a general property of offset distance that the amount of stretching is magnified the larger the offset distance.

Here's what you are flowing, notice the middle area where you don't like the deformation result is some distance away from the base plane:





The effect goes like this - the further away a point is from the base, the greater amount of distance it will get applied to it:





So to get better control you want the shape to be closer to the base plane and you probably want to apply it to the totally flat version instead of one where the middle/nose area has already been deformed some distance away from the base. And have the base plane going halfway through it. You want to minimize the amount of distance any part of your shape has away from the base plane to reduce expansion or collapsing effects.

Hope that makes sense!

- Michael

Hi Koi, for filleting on one side the problem is a skinny little face fragment:







On the other side, the filllet that has already been placed there now makes a tighter bend for a new fillet to try to navigate through. This will limit the new fillet to need to be smaller than the previous one. If you want to have a larger fillet in that area you will probably need to fillet it at the same time as you to the other long edges instead of in a separate pass.

- Michael

@Michael:
So to get better control you want the shape to be closer to the base plane and you probably want to apply it to the totally flat version instead of one where the middle/nose area has already been deformed some distance away from the base. And have the base plane going halfway through it. You want to minimize the amount of distance any part of your shape has away from the base plane to reduce expansion or collapsing effect


When i opened koi's file i skipped this and start focused on the frame shape :)
That's because most of problems newbies post on the forum are derived from messy lines and points
As you can see in my animated gif i have flow planes always on the solid,not far from it,this is an essential condition if you want to mantain the shape you want



@koi:
These edges got problems with fillet. I just can make a little fillet of 0,05 cm...

If i want to model the glasses i wear i do in real scale 1:1,then i use the caliper and take dimensions
what i read on the caliper? millimeters...1,2..etc, not 0,05 cm
cm are used by bricklayers,i hope you know what i mean :) ;)



Imagine Moi as a tidy workshop with all essential tools
you work better if your workplane is tidy.... ;)

M

Hey guys,
thank you so much for your time, thoughts, ideas and explanations. Especially for the md3-data!!
@M: You´re completely right with the dimensions- I´m a carpenter, i love centimeters:D

Thanks for your tips for the build of lines. I have seen the lines in your data. I like the nose area, nice move with the square control points!
Also thanks for the tip with the variation on the flow surf target close to the stems (temples) area, I will model it and add the hinge. I will show you my work afterwards! thank you for your time, I really appreciate that!!

@Michael: Thanks for your ideas! I will watch out for the surf every next time, when I will use the flow-tool!
I will try to eliminate that face fragment. Thanks for your tips with the fillet. For me it´s still not that easy.

Guys, I will send you some pictures when my new glasses is ready.
I thank you so much, your help was very motivating me!

Best regards

Koi

Hey guys, now I got it!
It was a fight again, because I didn´t rebuild. That´s the most important step!
I send you a picture. It´s not the prettiest glasses, but I learnt this toll now completely! Thanks! :)

Hey koi...what's that?




There are two solids not joined together,seem that you added a "ring" to cover an unwanted result

M

Hey M,
thanks for the question, you´re right.
I fixed it. I made the fillet before the flow. That´s why the result is so strange.
This time I made the flow and afterwards, I did the fillet. It´s looking better now.
I think its best to do fillet at last?
Best regards and thanks for the hint!

Koi