If you will take a 1/16th drill bit and drill hole where crack stops, It will do just that,stop the crack!! Then paint the crack with the glue shown below,e-bay good to find glue!!!I always hear mixed opinions about stress cracks. When is it important to repair would y'all say?
Wrap a piece of electrical tape about 1/8”-1/4” from end of bit. Use that as a stop.Key word. Trick.
Some folks aren’t good at tricks. I’ve seen it with my own eyes watching people with drills in their hands.