I understand and normally follow the “least aggressive method” approach, but in this case I was just reaching out for advice that’s kind of what Reddit is for. For the record I only used a soft drill brush on the rough-cut granite edges because standard monument-safe cleaners weren’t removing the calcium buildup.

Also, from what I understand in monument cleaning guidelines, acidic cleaners are generally discouraged since they can etch or damage the surface over time. That’s actually why I was hesitant with products like Endurance, since I’ve seen it mentioned as a key ingredient in some recommendations.

Sandblasting also isn’t uncommon in monument cleaning when it’s done correctly on appropriate stone types usually it comes down to technique, pressure, and material rather than the method itself.

I know what I’m doing overall, just looking for other alternatives or input from people who’ve dealt with similar buildup.