Festool's Domino Machine Is Fast, Accurate And Easy
If you've made any mortise and tenon joints you know that they are time consuming. There also is a risk of a misscut along the way requiring a new piece to be made.
With the domino system every member is cut with a simple but joint and then the domino mortises are made. The alignment stops built into the tool make it dead simple to get perfect alignments every time.
This video review will sow you all the details.
Less quality but more economical is the biscuit joinery system –– Take a look at this system