Getting mettal filings out of a frame?

I have just got an On-One Inbred 456 frame and there seems to be some mettal shavings still inside the downtube which i can here rattleing around every time the frame is tillted. Dos anyone have any tips on how to get rid of them?
Cheers,
Andy.
Cheers,
Andy.
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Parktools :?:SheldonBrown
Also do On-One galvanise their tubing to protect it from rust? If not is there anything i can spray inside to protect the inner surface, in case water gets in there somehow?
waxoyl, or a cycle specific anti rust treatment, or just spray some WD40 down the tubes every so often.
Parktools :?:SheldonBrown
Andy.