Here are some pictures of when I cut out the original aluminum window frames for curved glass, and installed new straight frames for flat tempered glass.
New window with tempered flat glass and weather seal.
You can see the new frame for flat glass.
New window of flat tempered glass with new Stainless Steel clips.
Here I'm drying some cedar fencing I recycled milling it into tongue & groove flooring.
Here's a picture of a finished window.