Use T-nuts or threaded inserts in the wood
Bolt the 8020 extrusion to the wood through the T-slot using machine screws
Use angle brackets or gusset plates for stronger corner connections
Pre-drill the wood to prevent splitting
Use washers under bolt heads and nuts to spread the load
Use lag screws or wood screws only if the load is light and the connection is non-structural
Use carriage bolts with washers and nuts for through-bolting
Add shims if needed to keep the extrusion aligned and level
Tighten fasteners evenly to avoid warping the wood
Use wood blocks or mounting plates if you need a larger contact area
Seal or finish the wood before assembly if moisture resistance is needed