Since ive used the machine on many before using my dick they feel way driffent inside.i use a saw all with a blade ground down heat it up stick it in a dilldo .at first they fear the blade will be inside but since most tyed wide open ..take not long for there first sqirting orgasms then i kick it into high speed nany pass the fuck out.after this stick your dick in .the inside of there pussy grips and works your dick over as if it was a dilldo