I think I may have a faulty hydrometer.
My last three brews have all measured the same gravity pre-boil and post boil. I have taken temperature into consideration and adjusted to get a "true" reading each time. Either my hydrometer is bunk, or the laws of physics don't apply in my garage. Theres no way I'm boiling off 1.5 to 2 gallons of water and not seeing an increase in SG!!
Anyone else ever encounter this?