The Kobra will compatible with all V5-V6 typed nozzles? You can buy them on Amazon. Here are some el cheapo: https://www.amazon.com/dp/B07JFGXC5N?ref=ppx_yo2ov_dt_b_product_details&th=1 and Genuine E3D V6 nozzle: https://www.amazon.com/dp/B00NAK9TWM?psc=1&ref=ppx_yo2ov_dt_b_product_details

Cura Start Code:

; AnyCubic Kobra and Kobra Max Custom Start G-code
M140 S{material_bed_temperature_layer_0}; Heat bed
M104 S{material_print_temperature_layer_0}; Heat extruder
G92 E0 ; Reset Extruder
G28 ; Home all axes
M190 S{material_bed_temperature_layer_0}; Wait for bed to get up to temperature
M109 S{material_print_temperature_layer_0}; Wait for extruder to get up to temperature
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position
G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line
G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little
G1 X0.4 Y20 Z0.3 F1500.0 E30 ; Draw the second line
G92 E0 ; Reset Extruder
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X5 Y20 Z0.3 F5000.0 ; Move over to prevent blob squish
;End of Custom Start Code

Printer Nozzles:

• $
• $$
• $$$
• $$$$

Hotend explained and how to properly change the nozzle on a 3D printer

• https://www.youtube.com/watch?v=OzRAVkXjw3I

Is my 3d Printer Belt too tight?

• https://www.youtube.com/watch?v=zoKmmT0a7jk

General Trouble Shooting Steps:

• Step 1: Did anything change before prints started failing? If Yes Change it back. If No go to Step 2
• Step 2: Did you complete maintenance on your printer? If No check belts, check wheels, check nozzle, filament path. If Yes go to Step 3
• Step 3: Print Calibration Test Objects, I suggest using this plugin for cura and its github wiki page. If this didn't help go to step 4.
• Step 4: Something is broken, start taking things apart.

Where do I find things to print?

• https://www.thingiverse.com/
• https://www.printables.com/
• https://www.myminifactory.com/
• https://cults3d.com/
• https://www.yeggi.com/

Where do I start if I want to make my own object to print

• https://www.tinkercad.com/ <- Start Here
• https://www.autodesk.com/products/fusion-360/personal