The casino has the right to change the dice whenever they feel like it. But in most cases it happens when more players begin to win more. Even casino supervisors can be superstitious.
The main thing here is that the players never notice that the dice have been changed.
The casino can decide to change the dice in any other of the following situations:
They think that the dice are already old and the edges are worn down. This usually happens when there is no action at the table.
The dice can be changed at the beginning of an 8 hour shift or in the case of a new crew of dealers. The dice can be changed if the layer himself requires it. But you have to remember that the casino can refuse you as they are not obliged to do it. One of the dice can get lost after the roll.
Note: All dice sets are numbered and usually have the logo of the casino and the city and state location of the casino imprinted. Dice are cancelled after use with a device that imprints a small circle in the centre on the number 4 edge.

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