Re: [CAD_CAM_EDM_DRO] some more milk digitizing ideas

Hi Graham,

This sounds a good idea - I'd recommend adding a small amount of ammonia
instead of detergent. From what I remember, even as little as 1% reduces
the surface tension significantly.
The other benefit of course, is unlike detergent, you wont end up with
bubbles! Though it may be a bit stinky.

The other issue of course is how to measure the Z-value, as due to the
volume of the object adding a known amount of fluid will move the actual
level in a "profile".
I guess my thinking is more down the lines of how to automate it, you
could just glue a ruler to the side and add water by hand otherwise -
but that wouldn't be CNC or on topic anymore! :)

Regards,
Abby
(http://www.silverkatt.co.uk)

>
> After looking at rat whiskers for a while (thanks for that) I started
> thinking about the milk digitizing again.
>
> I remembered this site:
>
> http://cre.ations.net/creation/44 <http://cre.ations.net/creation/44>
>
> He has created a nice strobe system that uses drops of water filled
> with a fluorescent reagent. He then illuminates this using UV leds.
> I'm wondering if a fluid like this might be the perfect medium for the
> method, add a filter to the camera and all you will see is the water,
> add some detergent and you get rid of much of the meniscus.
>
> I just like the fact it would not be relying on a fluid being opaque
> and can digitize black/white objects with equal ease (the fluid gives
> out light at a different wavelength to the illumination).
>
> Graham
>
>

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