Cleaning glass with a razor blade?

So I’m a smart ass for contradicting what you were saying, when your advise literally contradicts EVERYTHING that has ever been posted about fabrication debris.

I’m not scared to use a scraper, I don’t need to be taught as I have been cleaning windows as a commercial window cleaner for 20years and have used blades on at least a million panes of glass and am quite aware of how to use a blade and when to use and not use a blade.

https://community.windowcleaner.com/t/is-fabrication-debris-a-lie/