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.


  • Buying a decent diamond blade will likely cost as much as or more than the rental. Do you have other uses for the blade that would justify the purchase?
    – Comintern
    Jun 5, 2015 at 22:28
  • The author of this website (reubenscube.net/2012/08/…) says that it costed $16 to buy a diamond blade. So, I thought it would be much cheaper than the rental fee...
    – DSKim
    Jun 5, 2015 at 22:45
  • 2
    Don't use your circular saw. Rent a concrete saw, or other tool designed for the task.
    – Tester101
    Jun 6, 2015 at 1:28
  • Whatever you use will be full of tar for the rest of its life. I wouldn't sacrifice my worm drive for that.
    – Mazura
    Jul 6, 2015 at 22:35

1 Answer 1


If you try to do this with a circular saw, your "straight line" will look straight only to Salvatore Dali. A heavy duty street cutter is required.

Of course, what objective there could be in cutting a driveway we can only guess at.

  • Fiddy cents says he's installing an invisible dog fence, and will drop the wire in that slot.
    – pboin
    Jul 7, 2015 at 13:24
  • In my case, my driveway slopes down to the steps for my deck. It's graded poorly and I want to replace that section with a small patio. May 17, 2023 at 14:05

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