4 now lay your first sheet of mid grade plywood or mdf on top of the 2x4 s.
How to make a workbench top from 2x4. Then in the interest of being able to break down the work bench i ran in 3 8 lag screws into the tenon to hold the top together. Long and rip them to 3 in. I tried doing more at once and it got problematic. Invest in some decent ones and you ll never regret it.
I then lag screwed a bottom skirt of 2x4 covered with half inch ply for a lower shelf. Middle piece and two 7 in. You can make a few adjustments to my plans so the workbench suits your needs. Make sure the surface you are doing the glue up on is flat and level.
This step by step woodworking project is about wooden simple workbench made from 2x4s plans. Seems obious but people forget. I have designed this super simple workbench so you can build one using just 2x4s and 3 4 plywood. That will mean your bench top ends up about 3 inches thick.
When glueing work in small groups say 4 planks at a time. Cut 15 top boards 5 ft. The bench is rock solid. This workbench table top is made entirely with 2x4s.
I built mine so it would be just under 3 high and 5 long with a 2 wide top. Depending on your design you could vary how many you need. This will be the bottom of your workbench top checking again to ensure that all is still level. Set rails or long 2x4 s on top of them and level those.
This workbench is built from 100 2x4 s. For the leg slot cut two of the top boards into three pieces. Depending on your design you could vary how many you need.