Black Widow V3 full size disassembly. There's 15 screws underneath the key caps that you have to remove in order to separate the bottom part from the top. Gonna add some foam
Razer BlackWidow Chroma V2 | RZ03-0203x Support & FAQs
Accessing LEDs and Switches in Razer Blackwidow Ultimate 2013 - iFixit Repair Guide