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The Gestetner Cyclograph was a stencil-method duplicator that used a thin sheet of paper coated with wax (originally kite paper was used), which was written upon with a special stylus that left a broken line through the stencil, removing the paper's wax coating. Ink was forced through the stencil (originally by an ink roller), and it left its ...
The stencil copy method meant that only one copy had to be read, as all copies were mechanically identical. David Gestetner eventually moved to London , England and in 1881 established the Gestetner Cyclograph Company to produce stencils, styli and ink rollers.
The stencil would gradually stretch, starting near the top where the mechanical forces were greatest, causing a characteristic "mid-line sag" in the textual lines of the copies, that would progress until the stencil failed completely. The Gestetner Company (and others) devised various methods to make mimeo stencils more durable. [17]
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Alkaline cleaning agents contain strong bases like sodium hydroxide or potassium hydroxide. Bleach (pH 12) and ammonia (pH 11) are common alkaline cleaning agents. Often, dispersants, to prevent redeposition of dissolved dirt, and chelants, to attack rust, are added to the alkaline agent.
After use, wash silicone baking mats with a sponge and mild, grease-cutting dish soap, then rinse and hang dry or wipe dry on both sides with a clean dish towel. Though food doesn't generally tend ...
Fairbank's Gold Dust washing products was a line of all-purpose cleaning agents researched and developed by the N. K. Fairbank Manufacturing Company. First introduced to the American consumer in 1889, Gold Dust Washing Powder became a success due in large part to its low selling price and bright, eye-catching packaging.
The baking soda will neutralize the acidity of the solution, reducing its corrosive properties. Let it soak for 10 to 15 minutes. Thoroughly dry the object to prevent any future rust formation.