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  • remove cover slits from filament bricks
  • remove filament bricks from inactive turret
  • wipe gunk off with aluminum oxide powder, water and q-tip
  • wipe gunk off with a Kimwipe (q-tip) soaked in ethanol
  • rinse with H2O(mQ) 3 times
  • add 10% HNO3(cleaning grade) to glass beaker
  • place on hotplate and bring to a boil
  • discard HNO3 into glass bottle labeled “discard” or “dirty”
  • rinse with H2O(mQ) 3 times
  • discard H2O
  • quickly move to drying oven overnight
  • replace filament bricks onto turret
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