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DIY (very) big bubble glass (acrylic or epoxy) Answered

I just love these lamps from Axel De Witte:
http://alexdewitte.nl/?p=44

Is it in any way possible to create similar very big bubble glass with either acrylic or epoxy or something similar?

I have something in mind of a balloon in the shape I want and then spray painting it with epoxy resin or similar many times and then in the end remove the balloon inside.

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Maybe paint an epoxy glue on balloons, like you can do with papier mache?

You probably have to do a similar glassblowing or blow mold technique with a high grade optically clear acrylic or polycarbonate plastic. I don't think you can really layer resin and expect it to have strength without embedding a fiber or particle support matrix. It would be difficult to have it cure optically clear. You can experiment with heating up plastic soda bottles in an oven and then applying compressed air or blowing to see what you get.

There's no "paint" or similar one can paint on a mold, with several layers which can hold in strength?