Not to change the way you do things, but if you don't want to buy getserts, I can show you how to do it with just CA glue and thread.
I just cut another 1/8 groove in the end of my tenon closest to the gut end. I then take CA and glue the end of the thread into the bottom of the groove. Once it's stuck hard, just wind the thread around the inside of the groove tightly until it has pretty much filled the entire groove with thread. Soak it completely with thin CA and let it dry for 30 minutes or so. Then take Thick CA or gel and cover it completely to fill all of the voids and low spots. If your in a hurry, you can use accelerator, but I usually let it set overnight. Then just spin it up and cut it back to flat with the rest of the tenon. It works very well, and can save you some scratch. Hope this helps out.
Bob