rectangular frame 3d model

1. Coordinate system & orientation Use a right-handed Cartesian coordinate system Origin (0,0,0) at the geometric center of the frame X axis: horizontal (left negative, right positive) Y axis: vertical (bottom negative, top positive) Z axis: depth (rear negative, front positive) 2. Overall frame geometry Frame type: rectangular plate with through-cut openings Orientation: landscape Outer dimensions: Width (X): 480 mm Height (Y): 380 mm Thickness (Z): 10 mm Frame lies centered about origin 3. Inner usable aperture Inner clearance rectangle centered within outer frame Dimensions: Width: 460 mm Height: 360 mm Results in uniform frame border of 10 mm on all sides Inner aperture is a through-cut (full Z depth) 4. Small photo cut-outs (left block) Quantity & arrangement Total: 12 Grid arrangement: 3 rows (Y direction) 4 columns (X direction) All small cut-outs: Identical size Portrait orientation Rectangular Through-cut fully through Z Individual cut-out size Width (X): 48 mm Height