Thanks for allowing me to join the group. Cold up here in Ontario. -12 C. I’m looking for best way to cut hole in metal siding for wall furnace vent. Any suggestions?
May I suggest you update your location to some thing a little more specific as in future you may find that helps you when you have specific questions that affect you. Specially given the forum has a very global membership. Often you will find subjects may get different answers depending on locations and regulations.
Attached to house may be better if changed to Canada.
how thick is the metal? aluminum or steel?
aluminum I would use snips, steel I would carefully use a hole saw or snips . sawzall would be a lower choice, for me