Made more progress today (Sunday) on the wall. No A/C in the studio, so it was getting a bit warm. If you’ve smelled silicone caulk curing you know it has this sour smell reminiscent of old gym clothes. The part of the wall I built yesterday was set and it held together well. After about 3 ft of height, I noticed that the bottles were tilting towards the cap side. This is because most of the bottles (Dasani the biggest culprit) have a base that is slightly wider than the top. I had to cut small shims to even out the tilt, another painful detail. The first section of the test wall, 5 ft long and almost 6 ft high was complete.