Microscale Thermite Reaction

(fas.harvard.edu)

30 points | by krunck 1 hour ago

3 comments

  • imzadi 31 minutes ago

    Does the second rusty ball really need to be a rusty ball since it is covered in foil?

    • mrnotcrazy 15 minutes ago

      Does the ball need to be iron? Can we just take a 3d printed sphere, paint it with glue ,roll it around in a bucket of rust and then smash?

      • krunck 1 hour ago

        Please try this at home. You all have rusty iron ball laying around, right?

        • fer 1 hour ago

          It wouldn't be weird for someone in the south of France to have a rusty pétanque ball.

          • jcims 1 hour ago

            Hammer faces would work (def wear goggles!!!). Hit the face of the disposable one with a mixture of hydrogen peroxide, vinegar and salt and wait an hour.

            • xattt 1 hour ago

              Joining the thread to see where iron balls can be sourced.

              Some vendor on AliExpress? Those Lucky Iron Fish?

              • mhb 4 minutes ago

                Cast iron pan left outside for a day or two.

                • dgacmu 54 minutes ago

                  This might work with old iron dumbbells (or modern iron kettle balls if left unpainted). Your gym might hate you for it though.

                  • lstodd 1 hour ago

                    I'd guess exact form wouldn't matter. Wrap a hammer in foil and beat up something rusty.