I once got to do some QA lab systems work at a fiberglass plant. Fascinating place. The molten glass in giant hoppers is gravity fed through very expensive rho

I once got to do some QA lab systems work at a fiberglass plant. Fascinating place. The molten glass in giant hoppers is gravity fed through very expensive rhodium-plated platinum blocks, then spun into a plethora of different products and spooled or chopped. Their downstream customers would use that as the raw material for end products. I can't read the article because of the paywall though.. not sure the nuances between fiber optics and general fiberglass products.