What is the best way to mix self-levelling coatings?

There are several ways to mix self-leveling materials ranging from crude and inefficient manual methods to highly productive methods, 

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I have plenty of cheap labor to mix by hand, why buy a Mega Hippo?

Can all those who pay their laborers per bucket of material mixed stand up? 

 

There is nobody standing!

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Video: Mixing self-levellers - the hidden costs and how to reduce them

You know, we humans are fascinating creatures. But we also can be puzzling creatures of habit!
Puzzling, as not all our habits are good, yet we keep doing them.

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