10-02-2009, 05:46 AM
Do you have a table saw? You could rip the 2x4's into 2x2's, or rip them the other way into 1x4's. If you have enough 2x4's there is no reason not to use them, but if you don't rip them down to smaller sized lumber, the bench work will be heavy. You may also find that you have difficulty locating under table switch mechanisms because a 2x4 will take up a lot more space than a 1x4.