Config.g about ultimatereprappost HOT 1 OPEN

Spindle and tools (T) are not the same thing, you can have multiple tools for 1 spindle. After creating the spindle with M950 you can create multiple tools for that spindle with M563.

M950 R0 C"LASER" L24000 Q2000 ; Create Spindle 0, spindle PWM on Laser pin, Max 24000 RPM at full PWM, PWM frequency 2000Hz
M563 P1 S"Tool 1" R0 ; Create tool 1 with spindle 0 and call it "Tool 1"
M563 P2 S"Tool 2" R0 ; Create tool 1 with spindle 0 and call it "Tool 2"
M563 P3 S"Tool 3" R0 ; Create tool 1 with spindle 0 and call it "Tool 3"
M563 P4 S"Tool 4" R0 ; Create tool 1 with spindle 0 and call it "Tool 4"

from ultimatereprappost.