The first thing you need is a Lack tableleg. If you have to assemble a lot of tables just get one extra. It never hurts to have spareparts, and you can actually assemble 4 Hack-a-Lacks from one extra table bringing the costs down to about 2,50 each. The other ingredients are a saw, strong glue (I used polyurethan), a wrench and something to rough up the surface of the tableleg. The IKEA Hack-a-Lack is actually a drillpart so a drill is needed to use it.