Broad frequency filter for powder system

A sieving system for a powder, comprising:

• a support structure;
• and
• a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet, the filter housing comprising a broad frequency filter disposed between the inlet and the outlet, the broad frequency filter comprising:
• a first filter fixed relative to the filter housing, the first filter being substantially rigid;
• and
• a second filter coupled within the filter housing adjacent to the first filter, the second filter defining a maximum distance from the first filter greater than ¼ inch and less than 5 inches, and the second filter being substantially flexible such that the second filter is movable relative to the first filter within the filter housing when the filter housing moves relative to the support structure.

A method of reclaiming powder comprising:

• recovering an unused portion of a powder from a metal powder processing device;
• providing the unused portion of the powder to a broad frequency filter of a sieving system, the broad frequency filter comprising a first filter fixed relative to a filter housing, the first filter being substantially rigid;
• and a second filter coupled within the filter housing adjacent to the first filter, the second filter being substantially flexible such that the second filter is movable relative to the first filter within the filter housing when the filter housing moves relative to a support structure;
• and
• determining a parameter indicative of a powder mass within a portion of the sieving system.