Am Wed, 10 Jun 2015 22:27:23 -0400 schrieb George Hart <george@georgehart.com>:
I've got a square of the Penrose T.P. framed and hanging in my bathroom. I've also got a couple of extra squares I've been saving, thinking I might someday give them away as some kind of award.
Awards or recompense in form of printed paper is not unheard of, but by this kind of paper sure is unusual!
Dirk, the floor is beautiful so, I'd be happy to send you a P.T.P. square if you want to frame one and hang it in your bathroom.
Oh, thank you! That's very generous of you! I didn't think there was something left. Coincidentally, we are looking for some decorative element on the wall beside the mirror (above the toilet). A problem might be the framing and robustness against humidity.
Also, you might consider having a commercial laser-cutting or water-jet firm create a custom drain plate, so you can continue the pattern (as holes in a metal circle) for the drain. It is trivial to do if you can create a vector file of the pattern you want them to cut (but it's not inexpensive).
Yes, I already considered this. Maybe sometime, it'd be nice! It was a major effort finding a round drain. Only square ones seem to be readily available (and affordable). When my plumber finally came around with this circular drain, it reminded me at once of the metal samples a water jet cutting company had shown me when I inquired them about cutting the tiles (very expensive, but would have saved much time and grief glueing). For this round drain, I paid about 10 times the price of a square drain. A custom designed penrose drain plate will be expensive, and I have not figured out how it will look like when the rhombs are rather small to leave big enough bridges for stability.
George http://georgehart.com/