I remember when you originally posted the jars a while back. been waiting on the results. Fun stuff.
Forum is nearly impossible to post on. Things get scrambled to the point where they are not what was intended, links and pics never seem to post correctly or at all.
Anyway, I have wondered if it also would be possible to make floats out of expanding foam insulation. Not sure if Great Stuff is gas resistant or not. Could spray into a pipe or some other mold about the size needed and trim after it dried. Weight would be a consideration, though.
