Below is how the proposed new file would look, after my deletions, from the start of the file, through the beginning of layer 133, which is my best guess for where I need to restart the job.
This is nerve wracking for a newbie like me! LOL. Please let me know if anyone sees something glaring that I’m overlooking! I have something like 15-17 hours worth of print product I’m hoping to salvage.
;Header Start
;FLAVOR:Marlin
;TIME:6666
;Filament used: 0m
;Layer height: 0.24;header_type: 3dp
;thumbnail: data:image/png;base64, [SNIP]
;file_total_lines: 6551863
;estimated_time(s): 410868.23000000004
;nozzle_temperature(°C): 205
;build_plate_temperature(°C): 70
;work_speed(mm/minute): 3600
;max_x(mm): 0
;max_y(mm): 0
;max_z(mm): 0
;min_x(mm): 0
;min_y(mm): 0
;min_z(mm): 0;Header End
; G-code for 3dp engraving
; Generated by Snapmaker Luban 3.10.2
; Wed Dec 02 2020 3:49:30M82 ;absolute extrusion mode
;Start GCode begin
M104 S205
M140 S70
G28 ;home
G90 ;absolute positioning
G1 X-10 Y-10 F3000
G1 Z0 F1800
M109 S205;Wait for Hotend Temperature
M190 S70;Wait for Bed Temperature
G92 E0
G1 E20 F200
G92 E0
;Start GCode end
G92 E0
G1 F3600 E-5
;LAYER_COUNT:928 (which is 1062 - minus layers 0-133, a total of 134 layers)
;LAYER:0 – DELETED except for fan off command.
M107 ;fan off command;LAYER:1
M140 S50 ;heat the bed to 50 degrees Celsius
M106 S255 ;fan on full, 100%;LAYER:133
G0 Z32.12
G0 X71.858 Y97.167
;TYPE:SUPPORT
G1 F3600 E4233.57092
G92 E0
G1 X71.887 Y97.173 E0.00118
G1 X72.133 Y97.987 E0.03512
G1 X72.903 Y99.307 E0.09611
G1 X75.026 Y100.65 E0.19638
G1 X73.49 Y103.123 E0.31257
G1 X73.543 Y103.655 E0.33391
G1 X75.468 Y105.704 E0.44612