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mister

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Everything posted by mister

  1. I found this image on wikipedia about the timeframe of the sequence ov events that happen in wound heLing, https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Wound_healing_phases.png/701px-Wound_healing_phases.png It looks like it typically follows a logarithmic/exponential curve (obviously everyone heals at slightly different rates but the sequencing is the same). A lot happens within seconds and minutes and then the amount of progress begins to increasingly slow down with the final phases spanning minths and years . I would like to know if it actually does follow a logarithmic pattern, if itmis actually following a mathematical trajectory, or if it only looks like it does but does not in reality.
  2. They are Lego parts so they come in many shapes and sizes but in general anywhere from a small bead size to a larger part like 2 inch by 4 inch plate for example
  3. right, i am interested in all possible options, from physics to chemistry. I have been trying to find out what the actual cause of yellowing really is but i cannot quite figure it out. Is it because heat, or uv light, causes some chemical within the plastic to come out ? Perhaps if i could understand this, it might give further insight into ways of accelerating the process
  4. i have some small ABS plastic parts that i wish to "discolor" or in other words "yellow" chemically and want to know how this might be achieved. The type of yellowing i am after is the kind you frequently see with old gray computer keyboards or mouses that have yellowed over time. Or if plastic has been left outside for a while and has yellowed from sun damage. I want a moderate version of that. ironically, I know how to REVERSE yellowing for my parts, by immersing them in a bowl of Hydrogen Peroxide and leaving outside in direct sunlight for hours or days, and they become white as new, all discoloration is reversed quickly. But now i want to know how to speed up the yellowing process into something that i can consistently do, in bulk, in a relatively short time frame. There must be a way to do this chemically. Looking forward to your suggestions
  5. the thing is that i want to be able to do this for a bunch of parts at once, too. not just a single part at a time. Also if i used the string wouldnt the area under the string not get yellowed ? what if i used clear string or seran wrap / cellophane to suspend the parts ? would that allow the parts to yellow completely and not leave any area unyellowed ? i was searching for hot dog cooker images just now, do you think there is a superior design to use ? also is there some kind of "white reflector" product i can buy ??
  6. is there no way to do it more uniformly? For example i know that if i want to REVERSE yellowing i just put them in a bowl of hydrogen peroxide and leave in the sunlight and it uniformly reverses all yellowing in just a few hours or days
  7. i have some small ABS plastic parts and i wish to "yellow" them a bit, the kind of yellowing that you often see from sun damage or just over a long time like how old gray computer keyboards often discolor over many years. I would like to construct some kind of small box or device that i can put outside in the direct sunlight, and put the small parts inside this device, and have it intensify the UV light / rays / exposure to the small parts so that it speeds up whatever the yellowing process is. So my question is, how can i accomplish this? How can i magnify or intensify the light without totally melting or destroying the parts? I should also note that i want the exposure to be uniform and not concentrated in one tiny little area like a magnifying glass would do.
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