Hi dc42, Quotedc42 In RRF, M226 is Gcode initiated pause, see . I'm using an Ormerod 1 with "latest" stock firmware (EOL) and tried M25 as well as M226 from within the printed file. It seems like M226 was never implemented: GCodes.cpp line 2519 of stock firmware The M25 command stops the printer but the pause.g macro was not executed. The hot nozzle stops touching the printed part. Consideriby lastNick - Ormerod