I have been in business for the last four years. If you have any engraving requests, I can engrave on any material except, ( vinyl and pvc ). special shapes, animals ,etc. I use an 8 mm wood ply. The pens that are featured in the picture, are made from hard wood. Birdseye maple, walnut, cocobolo, cherry, white maple, others are available. Our machine is capable of engrave marking on metal as well for the identification purposes.