Toytaco2 wrote:Welcome to the forum Wishbone. Good to have you on board.
Like yourself, I started out not wanting to drill holes in my windows either. I did get all of my windows off Ebay, but, no trim rings. Mine are Hehr branded windows so trim rings could be located from the manufacturer, but at a cost almost what I paid for the 3 windows I used in the TD.
Finally I decided to use black finished square drive screws and drill through the window frames after all. The screws look to me like "high tech rivets" and give a look that I actually like after all. Most of the time you don't even notice they are there. I had to look hard to find a pic in which they are actually visible. If you look close in the pic, you will see them.

But if you just want trim rings, I understand that as well. There are many other places in my build where I didn't compromise my original ideas at all.
Good Luck,
Mike
Ditto on the high tech rivets -- it looked so much better than I had ever expected!
My window came off of eBay, either from an old RV camper or more likely a pickup truck. The size (and price!) was perfect for where I wanted to install it.
I had to dig through the specialty black drawer of screws at the local hardware store, and not the big box stores, to find them. You can actually see the pencil line that I used to keep all of the screws evenly spaced and at the same height.
I glued it to the outside with PL Premium (Polyurethane Construction Adhesive) and then sealed it up with a clear silicone. Each screw was also sealed.
I ended up making a homemade wooden clamp ring on the inside (it took multiple templates for that), and it was three layers of half inch plywood...so 1 1/2 inches thick, a good amount for the screw to sink into. Pretty sure the wooden clamp was glued on the inside with Titlebond.
A lot of work, but love the final product...and knowing that I did it all myself is a pretty incredible feeling.
