here is cheap and effective way to cut lugs or Groove your tires if you dont have any other tools than drill and old hole saw.
just sharpen the theeth out of your hole saw and let it eat
https://www.youtube.com/watch?v=OL7FYFQ3G0k
just sharpen the theeth out of your hole saw and let it eat
https://www.youtube.com/watch?v=OL7FYFQ3G0k