Parts of the window: Old CD jewel case cut down, the rails & stiles of the sash, & the grilles interior / exterior. The sash is grooved to accept the glazing & dadoed for the grilles. The wood is maple.
The sash & grilles are glued together.
The top of the sash is grooved & the grilles are glued in place.
...then I slide the plastic glazing into place & just repeat 4 more times : )
Interior view with (pop in/out) poster board cut-outs. Need to do the interior casings/half frames. Then figure out the partition placement so I can paint/wallpaper the walls.