Getting the details just right in a miniature project is important if you want the final product to look "real."In this case, I had to use a little geometry (Yeck! I did not like that subject in school!) to get the lintel just right. (The lintel is the board that spans across the front on top of the porch pillars.)
You see, the roof angle on the porch project is far less than a 45 degree angle. In geometry class I think they called that an acute angle. So I had to figure out a way to get the lintel cut to be compatible with this very narrow angle.
Because my table saw blade cannot be tipped beyond a 45 degree angle, I had to figure out a way to solidly support a tall, narrow piece of wood to go through the table saw without putting my fingers at risk of getting
First, I set my table saw blade so that it was at about a 73 degree angle. That's where the geometry came in. The angle of the roof is about 17 degrees. To get to that, I had to deduct that number from 90 degrees to get to my angled cut. I took a square chunk of 3/4" plywood and then used a clamp to hold a thinner piece of plywood at a right angle to the 3/4" plywood.
Next, I set my table saw fence so that the plywood was touching the side of the saw blade. That meant that anything held against the plywood would be cut down to the acute angle without any flat portion on the end, which was exactly what I needed.