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Drilling small holes in lead / soft alloy
Hi
I need to drill 1.5 - 2.0mm diameter holes to a depth of about 8mm in very soft alloys / lead. Using a small model maker's drill of unknown rpm only seems to get to about 2mm easily. The workpiece warms up (actually, quite hot) and it seems that drilling stops. Is there a technique for drilling this type of material? High rpm or slow? Ta. |
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