Ender 3 v2 bltouch bed leveling July 8, 2019 16 32 64 128 Ender 3 v2 bed leveling bl touch Ender 3 bltouch setup Ender 3 v2 easy bed leveling Ender 6 bltouch leveling Ender 3 bltouch marlin configuration Ender 3 installing cr touch