Sheer Madness, or Doable -- Click-n-Lock Triangle

[Tuxboy]

Looking Fantasy-ish If I get excited, I'll be redrawing the central piece to look like pieces of wood braced with wrought iron clasps.  It'll be a little less clean-and-scifi, and will enhance the optical illusion bit.  I was considering making one side wood, one side masonry, and the last side... some other fantasy building material, but I couldn't think of a third building material.

Rusted, pitted metal, I should think.

How about bone? Just a little sinister... ;p