LPKF ProtoMat 93s Manual
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7.4 Drilling
Attention! Before drilling make sure that the PCB is positioned tightly.
Switch on the vacuum cleaner!
You must check the PCBs are drilled with special PCB drills. It is important always
to lower the head at a constant speed. This is achieved by setting the tool as close
as possible to the material to be drilled. A setting nut can be used to make this
adjustment. An excessive lowering speed can result in burrs, particularly where
holes have a small diameter.
Only one PCB can be drilled at a time. It is not possible to stack PCBs one on top
of the other. No drill cover plate is needed. All drills are 32 mm long for 3 mm
collets and 1.5 inches long for 1/8 inch collets. For further notes see chapter
"Practical tips".
7.5 Isolation milling
1
2
3
LPKF universal- (1), micro- (2) and HF-cutter (3)
Attention! Before milling make sure that the PCB is positioned tightly!
Switch on the vacuum system!
Before milling, it must be ensured that sufficiently sharp LPKF universal milling
cutters (30 mm long or 1.42 inches long) are used. The milling width is set to
between 0.2 and 0.5 mm or 0.008 and 0.020 inches depending on component
thickness.
It is advisable to degrease the base material with cleaner spray before machining
(degreaser for electronic components), so that milling dust can be removed more
easily by the extractor.
