Fold up Equilateral Triangle to make Tetrahedron with arc tool and guideline

@jgrodzin wrote:

Hi Friends: I'm working on folding up a triangle (Rotate) to the vertical height of central equilateral triangle. (I uploaded a PDF showing my steps)

I see that there is a problem: The arc tool is line segments. So the Tip does not actually touch in the correct vertical point.

Any ideas to make this technique work.

I'm wanting to make a "water-tight" model for 3-d printing.

thanks,

Jim

jmg-foldup01.pdf (238.8 KB)

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