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It may go against your initial thinking, but sometimes you actually need to make cracks bigger to properly fill them. Crack chasing blades like the one pictured allow you to widen cracks in concrete and asphalt and taper the edges so you can fill them properly.

MK Diamond designed their V-segment MK-404DV crack chaser for dry cutting. Available in 4″, 4-1/4″, 5″, 7″, and 8″ sizes, these blades can be used in angle grinders with standard threaded or non-threaded arbors depending on the blade model. They run anywhere from $200 to $300 depending on the size.

Crack Chaser [MK Diamond]
Street Pricing [Google Products]
Via Amazon [What’s This?]

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5 Responses to Make The Crack Bigger

  1. kyle says:

    That is way moe rthan what I would be willing to pay for that wheel. What is the reason for the high cost. I would expect it to be under $100.

  2. Bob says:

    I’ve been told my crack is already big enough. 🙂

  3. kyle says:


  4. fred says:

    Crack chaser blades always seem to cost 2 to 3 times more than their equivalent diameter tuck-pointer blades – and even more than saw blades. They are always a bit wider and typically have a v-shaped profile – so maybe they are tougher to manufacture – or require more diamond material – or maybe its just that they are a lower volume item so the vendors charge more. Anyway you cut it (pun intended) if you need to buy a blade to go along with renting a gasoline-powered chaser (like an EDCO machine) fo chasing cracks in a parking garage etc. – your’e going to shell out some big bucks that will have to be figured into the cost of the job.

  5. Brau says:

    Thought process:

    “Sometimes you have to make the crack bigger”

    True, true.
    Hmm. I could use one of these wheels to “repair” my front path in a neat fashion!

    “can be used in angle grinders”

    Wonderful! Sounds great!


    Gonna be living with those cracks juuust the way they are until I lay new concrete.

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