Reply to "3D printed parts"

I use Rhino 6. There is an app that details surface textures that can be exported as a .stl file to print on a 3D laser printer (FormLabs 2).

However, I'd use a Laser cutter (Glowforge) for flat shapes like walls and trusses with a 3D engrave function to detail textures.

Catenary: You may find that over time that long thin parts don't retain their shape they bend.

For my catenary I printed the top piece and base with connectors then used a metal rod to connect them.

Atheists would not be in a foxhole in the first place.