YOU CANNOT MAKE A MALE INTO A FEMALE, you can stress it till it hermies but i wouldn't recommend this. males are not bad! if there were no males then we would not have any pot at all! i assume what you are thinking of is this, if you have a female plant that goes hermie in flower, you can remove all the male flowers as they appeaer to lessen the amount of seeds in the buds. you have to be very diligent to do this. all it takes is 1 male flower to seed the grow! it won't be super seeded from 1 hermie but there will be seeds! i had a plant go hermie at about 4weeks flowering. i searched and removed the hermies every third day until the plant finished and only got about 5-6 seeds totall. it took 1-3 hours evry time i had to look for the hermies! it's alot of work but if persistant you can save the grow!