ASSUMING you're building the whole window from scratch, then:
If the FRP panels are cheap and workable you could fab the window structure such that the "sash" would take glass, but you instead install the FRP and "think about" glass for a while... If you get lucky with as source or decide to splurge, install the glass into the sash you have originally made to take the glass. You would probably need to pad out and otherwise gasket the FRP creatively.
Cutting curves in glass isn't rocket science, but some people can and others would live better by not... It takes nice big flat work tables with decent light. My understanding is that glass cutters from the box store _might_ be good for one cut or so. There are "better" cutters available through the net. People making stained glass windows do a lot of odd cuts and enthusiast sites detail various types of tools if you want to take a stab at it yourself. I personally have had very mixed results, but I'm a little ham handed at times. ;< If you have the basic shop space, maybe find some trash windows to practice on. However, unfortunately, I think old glass is much harder to get to break along your scribe properly. So it might be better to get a couple pieces of cheap stuff from the box store, study up, and give that at try. Maybe you'll discover TalenT. <g>
Or maybe you can find a glassman locally.
This suggestion is pretty redneck because it assumes a few things:
- you can build an all purpose jam that will take various thicknesses of pane
- you'll start with cheap 1/16" glass to get the feel and install your successes while you "think" about the next better type of glass
- you'll get richer and more talented down the road so you can benefit from your early planning...
https://tglass.com/
This is an old company that does glass. All kinds. Torstenson is a materials supplier; they work and deliver the material, but don't install. You may be able to learn more about what's available from them. As I recall, they do have "efficient" sales, and counter people so if you bend their ear, you want have your inquiries planned, lined up and ready to go. I've used them because they're about a mile down the road from my Chicago digs. The last time was about 10 years ago, so maybe their attitude toward little guys has changed, but there might be information to be had. Logistics are something else. I'm sure they're not the only such business in the USA, so one of the things you could ask them is "who does what you do near <where Tony is>"? Because they've been in business since forever, there's a chance somebody at Torstenson knows the "real" glass businesses around the country. Just might get lucky and catch the right person. .
Cheers,
Rufus
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