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Rok/Presso tamper size/advice

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I have just got a Rok for Christmas along with a Vario grinder that will also do the honours for my aeropress.

Sadly the Vario has had to go back to HasBean as its broken but in the mean time I am testing the Rok with my old Krupps burr grinder. Its quickly become apparent that the plastic tamper with the Rok is not fit for purpose so I am after a proper one.


I have read differing advice on size. Some people say 49mm to get inside the ridge for the spring clip, others say 51mm to match the walls of the basket. As I have issues at the moment over tamping (I think) as I sometimes struggle to get any liquid out of the Rok, is the 51mm fine as for 14g of coffee, ie full standard basket only, as tamping that properly only seems to come down to that ridge anyway.


I dont think it makes a difference, but I am mainly using a bottomless pf that seems to be from the Presto days (bought from lecafeshop) but seems to be the same size.


Thanks for any help



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