I am sure you could get something bigger that would do it much faster. Luckily I didn’t have too much that needed to get done. If I find a better way I’ll let you know!
I'll be using this method to clean all the aluminium staircases in my factory which measure around 3 stories high there's 6 of them so i guess I've got my work cut out for me but yea there must be a quicker way