My condo building has an outdoor iron staircase that has been developing some penny to quarter sized holes. While the staircase is structurally sound, I’m looking for a solution to patch the holes in order to ease the concerns of some residents looking to avoid harm.
I’ve read that iron can be devilishly difficult to weld. I’m pretty hands on, and I’m ideally looking for a DIY solution, but I'm hoping to draw on the experience and recommendations of the community. Here's some pictures for reference: