Dimensions of a workbench, very abbreviated version, should be no 'deeper' than you can comfortably reach across. That usually translates to 24", and because most cabinets are about that dimension, 24" will address everything pretty readily. For length, 6' is not big and not small.
This step by step diy woodworking project is about free shooting bench plans. This article features detailed instructions for building a double shooting bench from basic materials. I designed the bench so that it has two seat on each side. In addition, you should set the posts into concrete for better accuracy when shooting.
The Basic Workbench A good woodworking bench is one that suits its user's needs. By Bob Vila. Photo: Flickr. The woodworking bench is to the workshop as bases are to the game of baseball: Without
Once your bench hits about 300 pounds, it won't move unless you want it to move. Think big when cutting the joints for your workbench. The small tenons are 1-1/4″ thick and 2-1/2″ long. The larger tenons are 2-1/2″ thick and 2″ long.
But there's more. Cabinetwork is sized in standard chunks. These sizes come from the human body; they aren't arbitrary. A kitchen's base cabinet is generally 24″ deep and 34-1/2″ high.
When it comes to the bench's width, there aren't many set guidelines except a starting point. The bench should be at least 51 inches wide if you plan on having two people sit on the bench, but it can be 60 inches or more.