Size for your common projects
A huge table can be counterproductive in a small garage. Choose enough area for your usual cabinet, table, shelf, or casework assemblies while preserving circulation.
Keep clamping access
Think about how clamps reach the work. An overhang, perforated top, or open edge can matter more than another bank of drawers.
Use storage carefully
Store assembly supplies nearby, but avoid filling the base so heavily that the table becomes impossible to move if mobility is part of the design.
Keep the project moving
Protect the assembly surface
The biggest feature of an assembly table is availability. If the top becomes long term storage, the table stops doing its job. Give clamps, glue, squares, drivers, and commonly used assembly tools homes nearby so they do not need to live on the work surface.
Size it from the projects you actually build
List three or four projects you realistically expect to assemble. Mock up their footprints with cardboard, painter's tape, or scrap. Leave enough access to reach clamps and fasteners. In a tight garage, a smaller table with open access can be more useful than a large table that blocks circulation.
Consider a hybrid role carefully
An assembly table can also serve as outfeed or a mobile work surface when the heights and clearances agree. Check the machine first. The table must stay out of the cutting path, controls, and safety features. A shared surface is valuable only when changing roles is quick.
Storage below the top
Lower shelves are simple and flexible. Drawers keep small items cleaner and easier to find. Open bays can hold project boxes or portable tools. Keep the storage shallow enough that you can still stand comfortably at the table.