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  • Peter Fraterdeus
    Oct 5, 2009

      You probably know all this stuff already...

      fer instance:
      Printing Ink.—The following hint is valuable, for it is only, as a
      rule, known to old-fashioned pressmen. The scrapings and dregs of ink-
      casks, skins of ink, scrapings of rollers, and waste ink generally, if
      sent to a small ink-maker to be remade up with some fresh ink, will
      turn out the best ink for a printer's use that can be obtained. We
      have known splendid specimen-work done with ink thus compounded, some
      of the material having been laid aside for years as waste. If the
      printer has an ink-grinding machine he may make the ink himself.


      Hints about Printers' Inks.—For all commercial work, printed on
      writing-paper, use ink with good body—a short, thick ink covers better
      on writing-paper. For circulars or other work printed on super-sized
      and calendered book the same ink will of course answer, but a cheaper
      quality will do as well. For jobs on print paper the thinnest ink is
      best. Short ink and hard rollers, thin ink and soft rollers, go best
      together. Where there are solid surfaces to cover, thick ink is best,
      because it covers better. For the same reason short ink is cheaper
      than the tacky article. Never try to print cuts or fine work on good
      paper with a poor quality of ink. It does not pay. Use the thick-
      bodied, short ink for such work, especially on a platen press. Wash up
      at least once a day, even on long runs. The ink will become clogged
      with dust, and good work is then impossible. Always use the best of
      coloured inks, except for poster work. They are cheaper in the end. In
      opening a can of coloured ink of which little is required, do not pull
      the skin off the top ; break it at the side, take out what is wanted,
      and immediately replace the skin. If you take the skin all off it will
      form again, and the ink will be wasted. Keep all ink-cans well
      covered. Dust will ruin any ink.

      To make Gold Bronze.—Melt two parts of pure tin in a crucible and add
      to it, under constant stirring, one part of metallic mercury,
      previously heated in an iron spoon, until it begins to emit fumes.
      When cold, the alloy is rubbed to powder, mixed with part each of
      chloride of ammonium and sublimed sulphur, and the whole enclosed in a
      flask or retort which is embedded in a sand bath. Heat is now applied
      until the sand has become red-hot, and this is maintained until it is
      certain that vapours are no longer evolved. The vessel is then removed
      from the hot sand and allowed to cool. The lower part of the vessel
      contains the gold bronze as a shining gold-coloured mass. In the upper
      part of the flask or retort, chloride of ammonium and cinnabar will be

      Have fun, but be careful with the fuming mercury... (Ahem, don't try
      this at home, kids!!!)