>The boxes of plastic sheeting I use at work state that they are 3 mil >(.003") thick poly plastic. >1 mil equals .001"
And 1 millimeter equals .039", so 2 mil plate at .078" is probably overkill. Per Dana Overall's wing tank construction article, http://www.krnet.org/wingtank/ he used .032" 2024 aluminum sheet so 1 mil should be ok. Allen G. Wiesner KR-2SS/TD S/N 1118 65 Franklin Street Ansonia, CT 06401-1240 (203) 732-0508 flash...@usadatanet.net
