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When soldering tattooing needles together I dip them in hot water and baking soda afterwards to neutralize the acid from the flux. If left in the solution the baking soda crystallizes and sticks to...

I'm not familiar with the maker but Solingen made razors are usually really good shavers. If it was me I would polish with something like Wenol or Semichrome on a paper towel and then hone them and...