If you're looking to join two pieces of wood together, a router table is a great way to do it. Here's how to joint a 2x4 on a router table:
1. Start by setting the depth of your router bit. You'll want to set it so that the cutting edge is just slightly deeper than the thickness of your wood. This will ensure a clean, flush cut.
2. Set up your fence so that it's parallel to the blade and at the correct distance from it. The distance will vary depending on the size of your router bit, but should be about 1/8 away from the blade.
3. Place your wood onto the router table and line up the edge that you want to cut with the fence. Slowly feed the wood through the blade, keeping it flush against the fence.
4. Once you've made your cuts, remove any excess sawdust or debris from the surface of your wood before joining it together. To do this, simply sand down both surfaces until they're smooth.
5 .Apply glue to one surface and then clamp the two pieces of wood together tightly, making sure that they're lined up correctly.