Lips or tongue are even more sensitive for this IME. I test vitrification of pot...

pbhjpbhj on April 21, 2017 | parent | context | favorite | on: Ultra-low-energy consumption ultrasonic clothes dr...

Lips or tongue are even more sensitive for this IME. I test vitrification of pottery by putting my tongue on it. I use my lips to test washing for cold vs. damp, but we sparsely use an eco friendly washing liquid, YMMV.