CS or STS even GA or stress induced hermis. if you google those words alot of info will come up. and explain the process. but basically you for a female plant to hermi or reverse. it produces pollen since it is a female plant and only has female chromosomes the offspring can only be female. there are some people that have gotten a male seed here and there but its extremely rare.
You are correct Kid Twist. I love fems. I have yet to grow any feminized seeds that grew bad or gave me unwanted bud. Maybe I am just lucky but I have grown nothing but strong plants form the different fem seeds I have grown. I think some people give fem seeds a bad name because they had either a bad experiance or because they dont like the way the female seed is produced. But if the fem seed is made correctly then the seeds should ALL be female plants.
The correct way to do this is simple. Take 2 clones(A & B) of the same strain...Spray one of the clones(A) with CS spray in veg and once in early flower. On day 10-20 Plant A will have balls in the spots you sprayed. Now once the pollen starts to drop you now pollinate the other female(B) that is also in flower and now all the seeds on the plant(B) will all be female. Do not grow any seeds from the plant that hermied(A).
I am now reversing(CS) all my best strains and making loads of fem beans for future growing. If you want to keep a good female that best matches your elite once clone only plant, the next best thing is feminized seeds. Other wise its a big pheno hunt imo.
My 2 cents.
~SM~