Open the tigerbox - tigerbox-reverse-engineering/tigerbox GitHub Wiki
Top
Gently push something between the wood and mesh at the top. Then leverage it up. Beware the cables!
From here you gain access to everything beside the reset button, usb-c connector, bottom leds and the headphone output.
Bottom
You will have to remove the bottom rubber stand which is glued onto the bottom. The you can unscrew the bottom.