Preserving wires in a closed place Fastening fine sieve wick on the porter lama Fixing sieve pipe collars with porter lama after finely stretching sieve edges Giving an oval shape to the middle part after completing the setting of the sieve Functioning the machine empty for a certain period of time and emptying the gasp in the screw after the setting Stretching of the sieve should be done carefully or else this may lead breaking Let it be five or four shorter than the case Using different parts of sieves are more economic. Instead of changing the sieves as a whole, it is better to change the part that got rotten. Such as : 120x400 Sieve     120x205    2 Pieces 120x500 Sieve     150x255    2 Pieces 200x600 Sieve     200x205    3 Pieces 200x500 Sieve     200x175    3 Pieces