Eye Protector Design Help

[sparky122sparks]

Hello everyone! 

I am building custom side clip-on eye protectors for my day-to-day glasses but I have come to a gap in my knowledge and am not sure how to progress.  I am working on this project as a challenge to myself, mostly just to see if I can design and print them. I started with perfecting the mounting mechanism and worked around it. Since I wasn't able to effectively scan the glasses to get the exact curvature, I designed and 3D printed multiple iterations to get the leading edges as close to where I want them on the glasses as possible and finally have all those edges defined. (Photo #1) Now comes the part which has stumped me for the past few days. I also have to fit the model to my face, specifically my cheekbone, thusly closing up the effective hole that this current prototype has below the glasses. (Photo #2, Older iteration) I have made an attempt at closing this gap using the Face tool in the Form workspace but continually get a self-intersecting error. I will say that I have never used the Form workspace as I have never needed it so sorry if this is an obvious issue to fix. Also, I am honestly not sure if this is the best or even viable way to get what I am looking for and would greatly appreciate any guidance on this project. 

Thanks in advance everyone,

Noah Sparks

[davebYYPCU]

Based on the 2nd photo, 

attach some cardboard to the current iteration, trial and error trim the cardboard to fit, then reproduce the shape you end up with.

Might help....

[sparky122sparks]

That is a viable option but I was attempting to go for a more organic look, less blocky and hard corners

[jeff_strater]

I can help you with the self-intersection, if you can share the model here. A suggestion: use "Box Mode" in the Display Mode command. Usually, the self-intersection is pretty obvious.

[sparky122sparks]

I attempted to use this method to no real result, nothing changed. Here is a link to my model for those who want it

https://a360.co/3tOatSM

[jeff_strater]

unfortunately, that link does not allow download.  Could you try exporting this as a Fusion Archive (F3D), and attach it to your next post as a file?  Thanks!

[sparky122sparks]

Yes I can!

[TrippyLighting]

I would try to get down some Fusion 360 basics before continuing. E.g. none of your sketches are fully dimensioned or constrained. What you'd need for this are likely a couple of splines a surface loft and a thickening operation.
However, I would not attempt this without a solid foundation in some basic stuff.

 

[jeff_strater]

I can fix the specific self-intersection.  See the screencast below.  But, what you appear to have done here is to create a single T-Spline face for this surface, with 10 vertices.  That is not how T-Splines is intended to be used, and you will likely not get great results doing it this way.  In the video, I enable a curvature map to show that the resulting surface is pretty bad - this is driven by the triangular faces that result when I do "subdivide" to try to repair the error.

You can probably do this using T-Splines, but I would take some time, and build this with as many 4-sided faces as possible, for the best results.  You may also be able to model a surface like this using Loft or Boundary Patch in the Surface tab.

[mango.freund]

Hello, I know what problems you have because I tried to fit glasses to my nose. the video clip shows you a way to create a mask. but it also shows that you first have to have fixed points on your face in order to recognize the elevations. if i would do your work, then use plastic modeling clay to shape the appropriate glasses and the cheekbones to each other and measure them later (take pictures in perfect perspective)

https://youtu.be/fVlQwwjBswg

[sparky122sparks]

Thank you everyone for giving your suggestions. I had never worked with the T-spline or loft features in Fusion before as my work set had never required it but I am glad I am learning. I have taken Trippys version of my file, tore it apart to understand how he set up his profiles and rails, modified it to how I like, and am going to continue prototyping. I appreciate all the help and suggestions you've all given!

Also to Trippy, I appreciate the suggestion and am working on honing my modeling skills every day. As I had been working off of canvas reference images, I hadn't bothered with dimensioning anything in those specific drawings. This was an oversight on my end and honestly, just me being lazy which looks bad on me, as it should. I'll make sure to keep everything tight from here on out. 

Thanks again, everyone!