Hey guys, I've been picking up a few projects including some failed projects from friends. Some of these items are hollow resin objects that are filled with filler foam, the spray type that just shoots in their and expands. Is there any product out there that may help to dissolve/liquify the filler foam or at least loosen it up for me to remove it all out of the objects they filled or will dremeling and sanding generally be the only option?