Picture frames don't have to be complicated, but the hardest part is always figuring out the math, so here's a quick summary to keep in your back pocket: Formula to figure out the rail sizes: Rail length = picture length + (2 x rail width) - (2 x groove width) Dado depth: I like to always use 1/2 inch which gives space for the glass and a 1/4 backing material as well as the picture, a mat, and the glazing points for keeping everything in the frame. Link to a helpful guide on picture frame making: https://www.keatonbeyerwoodworking.com/blog/6-easy-steps-for-building-perfect-picture-frames Interested in improving your woodworking? Here's the link to my courses where we'll explore essential woodworking skills that will take your projects to the next level. https://www.keatonbeyerwoodworking.com/courses Here are some affiliate links to products I used in this build. Picture Frame Clamp: https://amzn.to/3Q8Ch0m Glazing Points: https://amzn.to/3VYhssr Bosch 10" Miter Saw: https://amzn.to/3LLSSoz DeWalt 735X Planer: https://amzn.to/3PZxqyT Filming Equipment: Tripod: https://amzn.to/3rqbSlR Lights: https://amzn.to/45kjkgg Microphone: https://amzn.to/3PAwzDx Lapel Mic: https://amzn.to/3PDOkSf Shop Stuff: The Best Concrete Floor Shoes: https://amzn.to/3tbIMHp Ear Protection: https://amzn.to/3rwj5k7 Safety Glasses: https://amzn.to/3RFWXyG