Talk:Kneaded eraser
Latest comment: 5 years ago by 2003:72:2F13:E00:C4C6:1FD:1CA1:675F in topic History
 | This article is rated Start-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||
| |||||||||||||||
Composition edit
What is a kneaded eraser made out of? Certainly someone must know its general composition. "It is usually made of a grey or white pliable material..." doesn't seem like it clears the bar in my book. Matatigre36 (talk) 16:09, 13 April 2016 (UTC)
- According to this source: "natural and synthetic rubbers, vulcanized vegetable oil, antioxidants, mineral oil, pumice, calcium carbonate, titanium dioxide, and carbon black." "CCI reports its composition to be poly (isobutene), calcium carbonate, titanium, chloride, sulphur and trace amounts of magnesium, aluminum, silica, and potassium." This source (from the same journal) says: " Like the Pink Pearl eraser, the Faber-Castell Kneadable eraser is said to contain factice, rubber, antioxidants, pumice, and colorants. Unlike the Pink Pearl, it is said to contain mineral oil as a softener to prevent curing, and CaCO3 as a filler." Personally I'd go with the first definition, though the composition seems to vary by manufacturer. Opencooper (talk) 17:59, 13 April 2016 (UTC)
History edit
What is the history of the kneaded eraser? Who invented it and when? — Preceding unsigned comment added by 2003:72:2F13:E00:C4C6:1FD:1CA1:675F (talk) 21:07, 17 May 2018 (UTC)