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A Mohs’ Hardness Test Kit will determine the hardness of the concrete prior to grinding or polishing…
If you don’t know the hardness of the concrete, you won’t know what bond to use. If you use a soft bond diamond on soft concrete, they can disappear in 50m2. If you use a hard bond diamond on hard concrete then the machine just skates on the floor and the diamond tools will glaze over. Use a Mohs’ Hardness Test Kit to determine the hardness of the concrete before you begin.
How do you use the hardness picks?
Simply scratch a smooth surface of your material with the picks of various indicated hardness. As an example, if a No. 5 pick scratches the material, but a No. 4 pick does not, then your material’s hardness is 4.5