Ahmed wrote:I remember a mill that had problems with his sieve bolting flour: the system is fixed on rods and movement is quite similar (as far as I understood) to that which is done manually ; she tried different grades of steel, composite materials, glass fiber, nothing long resisted and ultimately are simple bamboo stems that have proven to be the solution!
this is classic in flour milling: these oscillating screens are called planchister: they are suspended by flexible wooden rods
in combine harvesters there is the same principle with steel blades ... and steel blades break more often than the wooden sticks of planchister