Cardboard and scrap fabric to protect glass, seal room, hire a 230mm grinder for a day. Wear gloves, googles, mask. Have a bucket of water near by, or a fire extinguisher (it'll throw a ton of sparks out) . Cutting done in 10-30 minutes probably.
I really want to do all of the above but add ‘hire tradesperson’
have a respirator and the flat just has boxes of stuff/wrapped furniture so can move that well away from the windowsill. we pallet wrapped everything as we knew dust was going to be an issue!
Cardboard and scrap fabric to protect glass, seal room, hire a 230mm grinder for a day. Wear gloves, googles, mask. Have a bucket of water near by, or a fire extinguisher (it'll throw a ton of sparks out) . Cutting done in 10-30 minutes probably.