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id m0uE3rg-00007YC; Mon, 29 Apr 96 20:04 CDT |
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Mon, 29 Apr 1996 18:06:07 PST |
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| From [log in to unmask] Wed May 1 14: |
46:47 1996 |
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Sigma Circuits, Inc. |
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Can anyone shed some light on the necessary water pressure required
in the rinse section of a PWB deburring machine to clear drilling
debris from small vias. We are drilling 13.5 mil holes and some 10
mil holes. Occasionally, we experience some particles of drill (or
back-up material) debris left in a few holes. My calculations show
that for the nozzle I selected, a 600 psig nozzle pressure results in
0.068 grams of force in a 13.5 mil hole. Is that enough? What does
it take to get the debris out? The vendor is offering options for
600, 1500, & 2000 psig. The price rises considerably with each
option. What do i need?
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