This is a very interesting topic. I haven't tried it yet, but now I have to. LOL! I found this online. It's a short "How To". Hope this helps!
To start off with, you will need to select your group for the sessions. The best number to start with is usually the same number that you would need for an investigation, 4-5 people. Make sure that all of the same members can be present for each session and also make sure that they are willing to continue with the experiments for an extended period of time, or at least until you have achieved the desired effects for your experiment.
2. Choose a location like one of the member’s house for the experiments. It should be a place where everyone can be comfortable and relaxed. You will also need to choose a table to use as well. I recommend a trip to an antique store to find a small wooden table that can seat everyone comfortably, but is not too big or too heavy. Experimenting with a gigantic, oak dining room table is not recommended if you want to see results any time soon!
3. The lighting in the room will be important. Table tipping seems to work the best in near darkness, perhaps because the sitters are creating a "spooky" atmosphere, but who knows?
4. Once you sit down to try and experiment with this, be sure to maintain a casual and relaxed atmosphere. Be sure to talk normally, make jokes and just try to relax. If you are too uptight about things happening, it’s not going to work. Simply relax and try to avoid concentrating on getting the table to move at first.
5. Be sure to have everyone’s hands on the table all the time. As things start to occur, it’s liable to become exciting but no one should move their hands if at all possible.
6. While nothing at all may happen in the initial sitting, it is bound to get more interesting as time progresses. Just be sure that the group meets regularly, once or twice a week if possible. To succeed, the group needs to be dedicated and willing to sit through several uneventful sessions before phenomena actually occurs.
7. Make sure that the meetings are always free from interruption and do whatever it takes to prepare for this. Turn off the TV and radios in the house and take the telephone off the hook if you need to.
8. Interestingly, faking phenomena sometimes encourages real phenomena to appear. In one experiment, a sitter experimented with this and found that he was able to induce real rappings from the table after he faked rapping noises or moved the table. He was never seen doing this as the sittings were conducted in near darkness. His view of why this occurred is because people have an inherent disbelief in this type of phenomena. The disbelief might be deeply buried but it is almost always there. Faking the phenomena seems to bypass the problem and allows the mind to work. In short, it seems that once people have been led to believe that something faked is true, then it actually occurs, possibly because their resistance to real activity has been broken down. This is something to consider in your own experiments and while I would never encourage anyone to fake anything during an investigation, this is merely an experiment and not designed to try and "contact the spirit world" anyway.
Take care!
~ Wanderling...