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?