RE: xtreme blade size help
1.2 mm is about average thickness.
The Chinese A/B blades are 1.2 mm, Vortex blades & bladecx2.com blades are 1.3mm.
But the HeliMax EZ blades are 1.5mm, the thickest I have so far.
Good luck with machining your own blade grips. It's nice to be able to make your own.
Tom