Here I will show you how I make the window frames. I finished 6. Now I have to make remaining 39 frames. Quite a task!
Sequence:
1) cutting out plenty of little sticks which will become my future vertical and horizontal window frame members. These are cut of 0.5 mm thick oak veneer.
2) making carton templates to fit exactly into existing windows. There is no one window same size as the other one so each template is unique. I number them so I know which fits where after I take them out.
3) Using cardboard templates trace their outline on piece of paper.
4) draw outline of all future frame upright and horizontal members
5) I mark up with pen and cut our tiny notches on every frame member so they are assembled together same way ship grating pieces are getting made. For making notches quickly I made up a quick tool made of standard one side blade. Blade was annealed with torch, heated red hot and quenched into water, then tempered in my baking oven.
6) then every member is getting glued with PVA glue where it belongs on the paper. Whole frame is getting wetted with diluted PVA glue.
Rest is just cutting off the ends, cleaning up, grinding to proper thickness, ensure it fits into window opening, painting yellow and gluing into the window opening.