Section 13: Material Engraving Techniques
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With some plastics it is best to engrave using two passes. The first pass cuts through
the cap layer and the second pass cleans away the residue that some plastics leave
behind.
Another technique that can be useful is to mask the plastic before engraving with
transfer or masking tape. This will prevent a buildup of residue on the plastic surface.
Misting the transfer tape with water will reduce heat buildup and melting on sensitive
plastics.
Plastic Vector Cutting Techniques
Use a Vector Grid to elevate the plastic before cutting. The Air Curtain will greatly
reduce flaming when cutting plastic.
Vectoring plastics is similar to vectoring other materials. First, experiment to
determine if the plastic can be cut with the laser. Plastics that are up to 1/16 inch
thick can usually be cut in a single pass. Thicker plastics may need two passes.
As with engraving, it is sometimes necessary to mask and dampen the plastic before
cutting. Even masking and wetting both front and backsides of the plastic is desirable
on sensitive plastics that have very low melting points.
WARNING! Never leave your laser unattended when vector cutting plastics!
Plastic can be very flammable.
WARNING! Do not engrave PVC (Polyvinyl Chloride). PVC will destroy the
optics and mechanics of your Epilog system. Cutting or engraving PVC will void
your warranty.
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