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Choose which objects will be creating a foam ring. If you want to create waterline rings with different properties you have to use one “Waterline” emitter per object.
Emission rate
This is the number of particles which are created per second per cubic metre. The final number of particles also depends on the various threshold values and the used particle type. In some cases it can be necessary to use very high settings of 1,000,000 and more.
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