by Munkey Joe » Sun Feb 06, 2011 6:49 am
Im going to say..... Its plastic for the first bottle and crystal clear plastic for the second, using the process you described. Make one bottle, inset it with the rocks and shoot the second set. I assume these were commercially made and relative cheap?? If the answers are yes then thats probably how it was done, more likely than not in an Asian country. They seem to have very automated casting sets there and are able to do this at a very attractive price for the markets in US and Europe.
Now to recreate this effect?? Heres how I would do it. take bottle #1 (inner bottle) and fill with Water. Cap it so it will not spill. Apply your suspended artifacts (your stuff) with maybe hot glue or some other type of glue. Have a mold made of a bigger bottle (more likely than not a silicon mold made from a glass bottle as to have smooth sides) and suspend the #1 bottle to where it is not touching the sides of Bottle #2 mold and is at the right placement. place in a VACUUM chamber to degas the resin, mix clear resin and cast under Vacuum. this will get all of the bubbles out I think.
Watch for "pull marks" As thats what your dealing with already, and be prepared to poss sand the top due to bursting bubbles.
This is just my opinion and may or may not work.
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