Get perfectly, consistently spaced and centered shelf-pin holes! Economical and practical, this jig can be used on assembled or unassembled cabinetry. Re-designed handle includes two storage compartments for self-centering bits! Ideal for adding shelves to new or existing cabinets. Drills holes either 1-7/16" or 2-1/2" from edge. Insert shelf pin in top or bottom position to extend jig for continuous drilling. Shelving Jigs measure 20" long Additional Self-Centering Bits available.
The shelf in the first picture is made of red oak plywood. You can choose the wood type, color and design as you like for your project. In case if you need more help understanding this project, you can refer the source link below. It discusses various items used, steps and tips and personal experience of the author who personally built a Zigzag shelf.
You can also use Google image search to research a project. Unlike the PDF search, the image search provides a photo of what the project will look like, which is helpful in determining if you want to pursue building it. By doing an image search for how to build a step stool, you will have a ton of options that all lead to woodworking plans of various quality. (The how to part of these is important—otherwise you’ll just get pictures of step stools.)