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RE: circuit board makers



Original poster: "Mccauley, Daniel H by way of Terry Fritz <twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>



 >>>>>>>>Which is exactly what I said.  I was going to say fiberglass
specifically, but I figured I would get a hundred
replies stating, "PCB is not fiberglass, its FR-4" etc....

More precisely it's the fiberglass of the G10 that's bad to breath rather
than just the fire retardent chemicals of FR4.

Mark Stolz
Houston, TX

 >Original poster: "Mccauley, Daniel H by way of Terry Fritz
 ><twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>
 >
 >
 >
 >Just remember, FR-4 dust, is extremely hazardous to breath in.  Not as
 >hazardous as say beryllium dust, but none the less,
 >you should wear a dust mask when machining this material.
 >
 >Dan