Ordered this to install on my cnc router for use with a 45 watt laser cutter/engraver. So far so good. I have made several cuts across the egg crate and it has proven to be very durable with only discoloration from the cut material above it. It is very thin. I would imagine a high powered laser would eventually degrade the egg crate and would require periodic replacement. 45 watts or less (Diode Laser), it should last a very long time. Also the shipment packaging was second to none. It arrived in perfect condition.