Like a Hand and Glove

Well, look at that. Now we have thick, flat, hollow tiles!

One of the challenges we discovered in our prototype is that the depth of the bottle caps requires a really thick layer of Thinset. And, the thickset inside the tiles didn't dry very quickly.

As if by serendipity, we discovered that the disks from peel-cap jugs pop RIGHT INTO the solid color screw caps. As if they were desigined to do this.

So we are collecting those too. Actually, tons of people were already contributing them, but now we are actively seeking them. Their technical name is snap tops, but no one knows that.

What we now have is a thick, hollow flat back tile. We could put more material inside it. The smaller screw tops from aseptic boxes of milk and soup also seem to fit well, to fill space.

We are learning!