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Easier, shirley, to keep regular incremental
backups? |
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Sounds like a good idea, but hard to do with a knob. I would think you could make a static pen that you could use like a pensil eraser to attract the particles back to erase lines by bringing the pen close to the screen. |
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no, it has to be under the screen so that you need to blindly find the lines. can't make it too easy, sorry. |
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Given the way Etch-a-sketches work, wouldn't that be a squirter, not an eraser? |
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An iron pad, with a piece of cat-fur on it (to re-static-ize the erased area) inside the box and a stylus with a magnet to un-draw with?
When the stylus is brought to the screen, the pad... aw, you get the picture... |
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Yes, like [DrCurry] says, it would have to have a way to lift the particles back up to the screen. (The screen didn't get de-static-ed, just physically scraped clear.) So, of course, we require a bit of energy, supplied by a little pump button. Like any other pump, it needs a sump, so you tilt the etch-a-sketch up on one corner where the pickup tube is, and squeeze the little button in the opposite corner where the pump is, and you get a little burst of particulate onto the screen out in the middle somewhere wherever the nozzle is. If it's in the right spot, bye-bye line. If it's somewhere else, you can tell because of the little splayed pattern where the air hit. If you tilt the etch-a-sketch the other way, so there's no material at the pick-up tube, you get a very easily visible spray spot, depending on how hard you hit the pump. Great for drawing flowers, or stars, or smoke from locomotives, or explosions, or that certain twinkle in [po]'s eye... |
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Unless you flip it over to perform this erase function, aren’t you in violation of the etch-a-sketch Prime Directive? |
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re: [Link].
I thought it was just powder inside. But there are styrene beads in the aluminum powder, to smooth out a fresh screen. I knew that just adding powder over a line doesn't erase it, but now I know why. Powder on your line may be satisfactory for our purposes, though not as good as a freshly coated screen. Anyway, to erase, "one simply turns the toy upside down and shakes it". If your third knob operated a little powder bucket or powdered wheel, flip the toy over to "un-draw" your line. See the following equation.
flip + shake = erase
It should at least do the flip. If you leave it right-side-up to erase, I'm concerned that you'll rip the very fabric of space-time, drain the universe through the rift and kill us all. That's basically what I meant. |
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flip + shake = boogiewoogie |
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True, but do you suspect a flip by itself might convey a different sentiment? |
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Perhaps the etch-a-sketch could be made up of dozens of mini-squares that combine to form the whole 8x10 screen. Then you can shake an individual square to erase it without disturbing all the rest. |
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