I did a search and a lot of the threads were pretty old, some from 2007. I am using WoFs Jetpack templates and building my pack with cardboard / chipboard of varying thicknesses. Besides bondo, because I like to go the non toxic route when I can, what do you guys like to use for fillers? I am thinking for seams and smoothing out corners, I can use either drywall compound or wood filler. I am just not sure which is the stronger of the two. Or if there is something better, i am open to suggestions!