![Red Oak Hardwood](http://shop.glowforge.com/cdn/shop/products/RedOakHardwood_Medium_TopDown_a36e5c25-c680-4978-a3b9-998f3967c712.jpg?v=1570414721&width=1445)
![](http://shop.glowforge.com/cdn/shop/files/Proofgrade_8ae91218-f74b-499e-b1db-bacda3f850c6_1300x.png?v=1652809318)
What is Proofgrade?
Pre-finished, protected, and perfectly calibrated for guaranteed prints.
Proofgrade is the first line of materials beautifully designed and safety tested for laser cutting and engraving. Proofgrade materials are specifically formulated for the Glowforge 3D laser printer, and are outstanding for any CO2 laser cutter/laser engraver.