I'm trying to figure out how to use Manual Mesh Bed Leveling (MMBL). I have my FT-5 setup for LCD based bed leveling from the menu. What I am still confused about is that do I have to issue a "M420 S1" to use the leveling before a print, and if a G29 needs to be used at all for the bed levelling to work. From some experiments done later on I'm pretty sure that "M420 S1" needs to be done in the start up GCODE.
M420 S1; turns on bed leveling
M420 S0;turns off bed leveling
Should part of my start GCODE for a print look like this?
From my pic (did not know how to include the pic) you can see that that MBL has been turned on in configuration.h, you see that the mesh table is filled in, from a previous M500 (mesh stored into EEPROM). A "G29 Q" shows that after a RESET that MBL has been stored in EEPROM, but MBL is turned off. BY issuing a "M420 S1" then a "G29 Q" you can see that MBL is turned on, and I assume it will be used to level the print.