Hi guys. I am using an HP 7475A for scratching using a modded pen and solid tungsten-carbide bit (a bit from a Wickes tile scribe) any ideas on how to sharpen this bit?? Also, what are the advantages to adding weight to the bit?? How much max weight? PK
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Re: "Twist" on an old method of PCB making.
2005-03-20 by onenastyviper