Another DIY CNC router, part 7 (machining aluminium motor mounts, hassles with bent plates)

0:00 aluminium plate straightening woes 4:05 making butt joint edges ’square’ 8:44 jig saw blades for aluminium 9:16 aligning machine with proper squares 11:02 adaptive profiling X motor mount front plate 15:08 lubricant test results 21:06 Z motor mount plate gets deep pockets 26:18 Y motor mount plate pocket 30:10 main table plate straightening woes 36:07 DIY face milling?