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[–] UsedToCuck ago 

mechanical pencil. done.

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[–] Fibbideh 0 points 1 point (+1|-0) ago 

We actually DID use mechanical pencils before we developed the space pen. We switched because the act of writing using a pencil in any form creates graphite dust. Under gravity this isn't a problem, but in 0g the dust forms a freefloating cloud. This wouldn't be a problem during short missions but prolonged activity in space, such as the ISS, graphite dust buildup becomes a problem for electronics.

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[–] UsedToCuck ago 

Hey man, im all for pens in space. Just playing devils advocate.. and to keep on that fashion, lets turn a filter on, or something. lol

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[–] SpottyMatt ago 

Thank you, I don't usually have the energy to correct the pen/pencil Russian space race story.