Iron sand melting 1

Melting black iron sand from Piha beach, in prototype arc furnace with galvanised nail rods.
It is interesting to see that with this iron sand the conductivity is not super.
With an insulation tester the reading across the electrodes is 500 k.ohms.
To trigger the process some Sunlight dishwasher liquid was used.
It surprised me how well the plastic container stood up to the job, although the plastic became very hot and soft and caught fire later on.