Patricia Thornton wrote:Tim, how did you manage to use your Dutch press?
Richierich wrote:Is this such an exact science? I used a food tin on the follower with a large wooden chopping board on top with a 2l bottle full of water balanced a'top, seemed to do a good job.
I think the principle of the cheese press is that you can get away with lighter loads at larger distances from the pivot point of the press.
For example, if the arm of the press allowed you to hang 1kg at a distance of 1m you would have 10Nm of torque (or turning force), if the arm was only half a metre you would need to hang 2kg to generate the same downward pressure.
So, if we make a few assumptions. The distance from the pivot that you are hanging the weight is 0.75m, the downward force on to the cheese is exerted only 0.25m. By hanging your 49lbs (22kg) at 0.75m you create 165Nm of torque, to generate the same downward force at 0.25m you would need to push down with 66kg (145lbs) on the cheese. This is nearer to 5psi, or 35kN/m2.
Please feel free to correct me, if I am wrong. But from my understanding the reason for the arm on the cheese press is to allow you to create the same force from smaller weights.
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