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MARKING METALS WITH AN ACID ETCHING PEN
WHERE CAN I PURCHASE ONLINE, A MARKING PEN WHICH DISPENSES A MILD ETCHING ACID FOR PERMANENTLY MARKING METAL SURFACES WITH NOTATIONS. THE ACID SHOULD BE GOOD ENOUGH TO MARK BRASS AND STEEL. THE PEN SHOULD BE ABLE TO BE USED JUST LIKE AN ORDINARY WRITING OBJECT.
CHARLES J PAKALNIS
- ELK GROVE VILLAGE, ILLINOIS
2002
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