Due to unfortunate circumstances and the love to see my arrows, I had to improvise splicing my feathers. You can come apon feathers at a real good deal on the classifieds.
So what you are going to need is some precut feathers of your liking, a sharp edge (I use an exacto, but a knife works too), some glue (I use super glue, but have also heard Duco works, I've also used fletch tape), some full length feathers (your back splice), and some scissors.
To start measure the desired splice on your precut feather. Then with your sharp straight edge, cut about 1/2 to 3/4 inch back towards the end of the feather, but NOT all the way to the back!
It should look like this
Next, pinch the end that wasn't cut off with one hand and with the other hold the feather toward the start of the cut. Slowly pull the quills up and forward (toward the front of the feather). With practice it should peel the membrane off the pre cut feather up towards the front of the cut.