Truss Laptop Riser Rail
A 150 mm long truss-webbed wedge rail that lifts a laptop's back edge 52 mm and tilts the deck 15° for typing height and under-body airflow; print two and set them under the laptop's left and right edges. The 26 mm front lip stops the machine sliding off, a 12 x 3 mm channel down the deck takes a strip of foam or silicone grip tape, and two M4 clearance tabs (4.5 mm holes) let you screw the pair permanently to a shelf or plywood base.
desk laptop-stand riser ergonomics