5 ms·
> You don't want conductive graphite particles shorting out electronics nor do you want flammable dust or wood flakes. For decades mechanical pencils use non-c
by lr1970 3mo ago
> You don't want conductive graphite particles shorting out electronics nor do you want flammable dust or wood flakes.
For decades mechanical pencils use non-conducting polymer based refills that eliminate the problem you mention.
- robocat 3mo agoPolymer leads were invented by the Japanese late 50's. Pentel use manga (漫画 whimsical/informal drawings) to write the history of a burnt rice ball being the inspiration: https://pentel.ca/docs/e_manga.pdf https://pentel.ca/docs/e_manga.pdf (page 7 with the title "Pentel's Sharp Pencil Refills"). Previously there were clutch pencils using the historical fired clay and graphite https://www.bl.uk/stories/blogs/posts/the-history-of-the-pencil https://www.bl.uk/stories/blogs/posts/the-history-of-the-pen... As usual Germans claim inventing it first https://www.computerhistory.org/siliconengine/the-european-transistor-invention/ https://www.computerhistory.org/siliconengine/the-european-t... ). Why are there no teutonic Space Pencil jokes?