It is crucial to the success of your grinding and polishing jobs to select the diamond bond which correctly matches the concrete density of the salb you are working on .While 80% of concrete can be ground or polished with medium bond diamonds, there will be many instances where you will need a different strength bond in order to be effective.
Hard Concrete
    Hard concrete means soft bond tooling is required. If a medium bond diamond is not cutting fast enough or is glazing over, you need to move to a softer bond diamond.
Soft Concrete
    Soft concrete means hard bond tooling is required. If you have a diamond that is wearing too quickly, you will need to select a harder bond in order to increase life span and production.
Testing Your Concrete
    If you’re not sure if your concrete is hard or soft, it’s a good idea to buy a Moh’s hardness test kit which rates the hardness of rock, mineral, and other similar materials, including concrete. Containing several small picks, you can do a scratch test on the concrete to see how hard it is. If a #4 pick leaves a scratch, but a #5 doesn’t, the rating would be around a 4.5, so that or anything below should be used with a hard bond. If your concrete scratch test is between 5 and 6, a medium bond would be best, while anything above 6 should use a hard bond.
    In Bontai Diamond Tools Company, you will find options for any slab or stone work that may require special tooling.Whether it be extra soft, medium, hard or extra hard, wet or dry, there is an appropriate choice in the offering for you.We keep continuing to meet the individual demands of our customers, tailor-made differentiated products, enhance the value of our products, and continuously create more value for our customers. Striving for the world’s best diamond tool supplier is our ultimate goal.