Scooternjng

A general question for those who do ST profiles in the Captain Shade scale- any suggestion on where to find interior parts for cross-sectional work?

I've been slowly working on pulling the interior wall panels. Nothing like an hour's work swinging a hammer against a cold chisel breaking tack welds and grinding off stubborn screw heads. I've also been in something of a planning mode for next season, while waiting for winter to set into attack the Asphalteum™ (If it's as bad as NWS and Farmers' Almanac are predicting, the cold will definitely help). Once the floor's up, I've been thinking would it be worth it to run 4 longitudinal beams of double-stacked 1/2" ply ripped into 4" widths, 1" rigid insulation between them, then more double-stacked 1/2" laterally with 7' spacing and more

Some days I wonder, what purpose do I have.  Am I to be a real life John Gustafson (Jack Lemmon, Grumpy Old Men), a grumpy old man?  And those days are usually followed by wondering why the hell I always feel like I'm a day late and a dollar short.  At which point, I usually look in the mirror, and say to myself "FML". Two simple words: Melancholy sucks.