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  1. W

    Bino Thoughts #4

    A company selling oils needs a good way to get them off things, sounds very reasonable. The salt probably helps keep the bugs away as the alcohol levels aren’t high. Sure it works as advertised. All around the place I hear “perfect” used too often as if there is only one solution to every...
  2. W

    Bino Thoughts #4

    If we all used sapphire lenses then we could use sandpaper for lens cleaning..... Peter
  3. W

    Bino Thoughts #4

    A wee correction 3)Acetone is a larger molecule (6.16Angstrom) got plenty more atoms than water (2.75Angstrom), what you describe is the lower surface tension (water 72.8mN/m, acetone 25.5mN/m), so it wicks into cracks via capillary action? It’s also got a third the viscosity too which probably...