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flolic

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    http://www.filiplolic.com

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    Split, Croatia

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  1. I agree, that CNC machine Z axis should have tolerances and precision in a sub micron range. I don't have that precision on my machine, but it should be quite capable in surface polishing if I ever produce precision spring loaded tool...
  2. Not lathe but CNC mill (or router).
  3. I ordered the hydrogen peroxide (it is conveniently available in 35% strength as a nutritional supplement) and picked up some sulfuric acid from the auto parts store (battery acid). Regular battery acid will not work, you need concentrated stuff. You can concentrate sulphuric acid by boiling it in a glass beaker, but you must be VERY careful and do that outdoors or under the fume hood. Concentrated sulphuric acid is very nasty stuff, be extremely careful handling it. Also remember to NEVER add water (or hydrogen peroxide) to the acid, always (slowly) add acid to the water. Otherwise you risk thermal explosion because reaction is exothermic.
  4. So, what exactly we are looking here? How long is total exposure time under UV lamp? Sent from my GT-I9100 using Tapatalk 2
  5. I think strong UV exposure would be best possible solution to "debayer" sensor. I remember reading in some Sony CCD datasheets that prolonged exposure of sensor to strong UV radiation will fade out color layers. Question remains of how strong is to strong, and how microlenses will react to UV. I think they are made of some sort of epoxy plastic, but what if they turn opaque? Also I don't think exposing peripheral circuitry is very "healthy". That circuitry is masked (blue area) but I think UV radiation will penetrate that. If I find another sensor, I will try to mask all but the small part of the image sensitive area. That way I will have something to compare.
  6. I tried exactly that method over 10 years ago on Philips Toucam webcam. Unfortunately sensor died after short exposure to strong UV light... I used 125W HPM lamp with broken outer glass (I originally used that lamp for EPROM erasing). I hope you'll have better luck.
  7. Yes, CNC with high speed spindle and diamond coated tool should cut through the glass easily. I may try that some time...
  8. I am just in the process of finishing my CNC router. My plan is to mill aluminium or hard plastic frame that will cover whole top of the sensor, exposing only light sensitive area and protecting everything else. Router is almost finished, still waiting for some details. I will try this idea and let you know if it works... Sent from my GT-I9100 using Tapatalk 2
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