Which revolutionary scientific product required its inventors to overcome a critical design flaw where the adhesive was initially TOO strong, making the product unusable for its intended purpose?

The journey from scientific discovery to marketable product involves intricate innovation processes. Many laboratory breakthroughs require significant redesign before becoming viable consumer products. This trivia tests your knowledge about famous scientific product innovations and the design challenges that were overcome to bring laboratory discoveries to the market. How well do you understand the intersection of science and product design?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Post-it Notes (originally the adhesive was too weak, not too strong)
Super Glue (cyanoacrylate adhesive, which was initially rejected for being too sticky before finding its market niche)
Teflon coating (the non-stick property was the goal from the beginning, not a design flaw)
Velcro (which was inspired by burrs sticking to dog fur, not from an overly strong adhesive)