You need a grinder that plugs in to a socket and a pad. Battery powered ones don't have enough power.
I was just going to use my battery drill. Watched some Utube videos and the optimal speed is 1200rpm. Bit I didn't realise its like sanding wood. Start with heavy grit and then work down to Cerium Oxide Powder to polish it. Me being a joiner means I have plenty of tools to do the job.
Have a few big scratches on my glass patio doors, so going to practice on one of them and see how it turns out, if I can polish them out then I will tackle the window. If I manage it then it will be another service I can offer my customers.
Picked up 3 new jobs yesterday a new score a month clean in the middle of 2 customers I have been cleaning for years. Always wondered why they never asked me to clean them, then the house got sold and new young couple asked me yesterday. Talking to my other customer and now I have the SFG to clean and clear gutters for them and then another job to scrape damaged paint off wall and repaint.
Back out today clearing a block of 4 homes gutters with vac. Tomorrow I am going to buy a 15m Vac hose because my 7.5m hose is far too small. The 2 ton SFG job will pay for the new hose, it looks like the gutter clears have came in early. Since the condition of gutters is in the home report means much more work for us so they can get them down to a number 1 again.
Stuff coming today and tomorrow so will report back when I tackle my patio door scratches.