Steel isn’t naturally flat. There are multiple reasons a laser cut part could warp, but fundamentally it happens because internal stresses inside the part become unbalanced. Most materials hold whatever shape they’re in (whether that’s flat or bent) because of the way they’re stressed. Imbalance can be caused by increasing or decreasing stresses in the part unevenly. Or it can be caused by removing partial sections of stressed material. We’ll do our best to let you know if parts in your order are likely to warp during the quotation stage and will highlight this risk within our email communication to you. If you choose to proceed with the risk and your parts do end up warping or bowing during laser cutting, we may reach out to you to discuss what can be done, however, the parts may not be rejectable, and recuts may have the same outcome.