Originally Posted by evilXkilla
Heimer is my main but having played numerous games with him I've never even thought of coming close to Baron alone... If u can please explain how that's possible ill appreciate it
Perhaps Clodiman has some unique way of soloing baron, but form what I've found, while it's quite possible with 3 turrets that do ~150/shot set up behind baron's wall, it's also quite dangerous, as even with the 2 second sanctity given by Zhonya's, your health will still reach dangerous lows, with the risk of death. So, unless you take Rylai's and RoA(which, while viable, I do not recommend for it arguably isn't as efficient for Heimer's siegeability and nukeability) while being on the purple team, soloing baron in the later stages of the game when such becomes possible simply feels to be too much of a risk.
Heimerdinger is still quite effective for actually killing baron, though. Just set up 3 turrets behind baron's wall (they'll be instantly targeted by baron if he has vision of them), and let a tank initiate the fight. He'll be down in under 20 seconds.