Bed leveled/flattened, and z-offset fun - Getting good prints with the Silicon Spacer Mod

Applying the Silicon Spacer Mod, Bed Leveling, Squaring the Axis's, and calibrating the Z-Offset for a new Anycubic Kobra 2 Max. 00:00 Assessing the new Kobra 2 Max Bed 00:58 What we are going to do 01:18 Why we need spacers for the spacers 03:00 A note on spacer mounting orientation 03:31 Removing the Bed 03:55 Assessment of the root cause 04:32 Spacer Installation 06:30 The Dial Indicator 07:25 Dial Indicator Installation and Use 08:51 Measure, Adjust, Repeat 12:13 Bed Flatness - The Results 12:27 Checking the Z axis is square to the bed 12:35 Checking the X axis is parallel to the bed 14:26 Run Auto Leveling 14:42 Clean beds make for sticky first layers 16:05 Note on my G Code 17:15 Caution for the first print post auto-level 18:25 Assessing the first test print 24:53 The first layer results 25:31 Further tuning The Silicon Spacers : Dial Indicator : 3d Printed Silicon Spacers - Spacers : Note: The thickness added to the middle spacers is 3mm, any spacers that measure this thickness with a proper diameter should work just fine. Dial Indicator Mount (Note, there are multiple types of mounts in the files section including the version I used which replaces the back of the dial indicator) Z-Offset Calibration Print : My Custom Start G-Code (warms the bed and nozzle (only a bit), then sets the nozzle temp a little bit warmer and homes XYZ, then sends the nozzle to the front and parks it on the bed surface while it heats to temp, after it drags a line and begins the print) : G90 ; use absolute coordinates M83 ; extruder relative mode M140 S[first_layer_bed_temperature] ; set bed temp M104 S60 ; warm extruder temp M107 ; Set Fan Off M190 S[first_layer_bed_temperature] ; wait for bed temp M104 S180 ; warmer extruder temp M107 ; Set Fan Off G28 ; move X/Y/Z to min endstops G1 ; lift nozzle a bit G92 E0 G1 Y3 F2400 ; zero the extruded length M104 S[first_layer_temperature] ; set extruder temp M109 S[first_layer_temperature] ; wait for extruder temp G1 X180 E40 F500 ; Extrude 25mm of filament in a 5cm line. G92 E0 ; zero the extruded length again G1 E-0.2 F3000 ; Retract a little G1 X181 F4000 ; Quickly wipe away from the filament line M117 If you find this content helpful or have any questions, please reach out or leave a comment below.