But at these length scales these materials are very corrodable, even stainless steel. They wont last long in the body. Unlike, say, textures silica that was on

But at these length scales these materials are very corrodable, even stainless steel. They wont last long in the body. Unlike, say, textures silica that was on here a few months ago. Then I raised this exact concern since SiO2 wont just disappear.