topic Re: "Flatting" Polar Triangles in Fusion Design, Validate & Document Forum

"Flatting" Polar Triangles

Anonymous — Thu, 31 Oct 2019 09:52:42 GMT

Hi all,
I need to translate onto a flat surface the perimeters of a generic spherical triangle, so to obtain laser-cutting path for generating pieces that will be subsequently blended in order to reconstruct the entire model.

In the attached images you can see an "ogive" that I want to cut into tre slices. Each slice perimeter will become the laser-cutting paths.

I know that the matter go right to the general projection problem (ex. the Mercator projection), so the simple operation of projecting those perimeters onto a flat surface will introduce too much errors.

Do you have any idea about how to do that in order to mitigate errors?

Thank you!

Re: "Flatting" Polar Triangles

TheCADWhisperer — Thu, 31 Oct 2019 10:54:41 GMT

Autodesk MeshMixer or Autodesk Inventor Professional - Unwrap.

Re: "Flatting" Polar Triangles

Anonymous — Thu, 31 Oct 2019 13:15:03 GMT

Hi TheCADWhisperer,
thank you for your reply! I'm able to confirm the correct procedure:

Export from Fusion360 the desired surface into an STL file (it is not necessary to export from a body.)
Open the free software "Meshmixer" ( http://www.meshmixer.com ) and import the STL.
Use "Edit - Unwrap" function to flatten the surface, delete the source surface and export the obtained flat surface(s) into the desired format (ex. SVG.)

Anyway it's a pity the lack of these functionalities in F360!