Edges of model aren't printing (gray in Cura)

[scotturman 0]

I'm trying to print out a truss design (daughter's science fair project).  For the life of me I can't figure out why the 2 outer edges aren't printing.  Cura decided not to for some reason.

All of the lines are the same thickness (designed in Tinkercad originally).  It's supposed to be a trapezoid but the sides are still grey.  Any pointers appreciated!

 

Equalateral Truss With Supports.3mf Equalateral Truss With Supports.stl

[orlin278 14]

Hi, 

the walls are just to thin, you're at the edge of printability at your settings.

I assume that the others can be printed because the triangles of the stl are different at the outer angled part.

 

If you have the original file and can modify it, than increasing the width would help.

 

Maybe some others have any idea with the setting. But I would say, thicker walls or smaller nozzle.

 

Greetings

[Carbon 28]

Agreed with what @orlin278 said.

 

Even with an AA0.25 nozzle this still won't print.

 

[scotturman 0]

Thanks very much!  If anybody knows of a way in Tinkercad to create a triangle with a consistent line width on all sides, let me know. 🙂  I will go back to the design there and see if I can make those edges thicker.