Button fit in the hole that works as a swtich, to control Led light or other electronics inside.
No need to remove any panel from the printer.
Use a 8mmx8mm self locking switch, three 5mmx2.5mm magnets OR some double side tape
Print the button house with the pin upward, no support needed
Print the button
Wire the cricut to you need
Fit in the switch untill it snap in
Install the house first, fit the pin to the small hole already on the inside metal panel
Install the button from outside, through the hole