I should cut a stright line on my 20-feet asphalt driveway, and am wondering what would be a easy way of doing it. I was told that a worm drive circular saw could do that with a diamond blade. I don't have a worm drive circular saw but has a normal circular saw from Makita (7 1/2"). Would a normal circular saw be able to cut the asphalt? It is not that thick -- about 1 1/2 ". Or, would just renting a walk-behind concrete saw from HomeDepot be easier? When I check the fee, it is about $50 for 4 hour and $70 for a full day.
If a circular saw can get the job done easily, I don't want to spend over $50 but am concerned with that my circular saw might be damaged.