This machine is multi-functional special purpose equipment for perforation and grooving of the rimless frame it is most applicable to CR lens and PC lens to perforate and groove Opposing taper drill bits system allow holes to be drilled simultaneously avoids chipping and breaking of all lenses, especially those made of glass. After the hole is drilled, place the lens funder reamer and lift it upwards to be enlarged to the desired size. The adjustable groove cutting devices can get the accurate depth of groove cutting.
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