> Doesn't aquarium grade silicon caulk avoid the acetic acid problem? "Neutral cure" silicon rubber liberates (AFAIR) ethyl alcohol rather than acetic acid during curing. This is less likely to do nasty things to surrounding materials. Just don't lick too much of it until it's properly dry. RM -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist