Set to roughly 20–50 depending on the desired depth. Crucially, check Draw Hidden Faces in the options.
: Right-click your text layer and select Blending Options . Choose Bevel & Emboss , set the Style to Inner Bevel , and the Direction to Down . Result_3_1000000.txt
: Go to Effect > 3D and Materials > 3D Extrude & Bevel . Set the position to Isometric Top (or similar perspective). Set to roughly 20–50 depending on the desired depth
: Add an Inner Shadow with a dark color to simulate depth inside the letters. set the Style to Inner Bevel
: Go to Object > Expand Appearance . Use the Direct Selection Tool (white arrow) to select the top faces of each letter, then Cut (Ctrl+X) and Paste in Place (Ctrl+Shift+V).