LPKF ProtoMat 93s Manual
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Securing the PCB
1. Machine bed (aluminum base plate)
2. Alignment pins, 3 mm in diameter
3. Base material, approx. 1.6 mm thick
4. Drilling base, 2 mm thick
5. Drafting tape
6. Two-pin strip
The alignment pins hold the PCB in position. This is essential particularly for
contour milling. They are also the reference when turning double-sided PCBs.
The masking tape holds the PCB down at the edges.
Attention! Switch on the vacuum system! Take into consideration that the
vacuum filter might need to be changed!
It is important that there is no dirt (adhesive tape remains, drilling or milling chips)
between the individual layers so that the base material can be laid absolutely flat.
Small particles under the base material would adversely affect milling depth
uniformity.
7.2 The mechanical working depth limiter
Attention! Keep your fingers away from the movement area of the machine
during operation!
When milling isolation channels in PCB materials, it is extremely important to keep
a constant milling depth. With the LPKF ProtoMat 93s, this done by the
mechanical working depth limiter.
