Depends on used material - for pure unobtainium it's clockwise with the third harmonic, while adding one counterclockwise twist at every 4th dimension temporal junction (plastic has a lot of these, so wood is preferable). For more mundane materials (102% pure copper, monocrystaline alluminum) it doesn't matter which way you turn, but you must do it whilst chanting - any chant should do, but be careful, and remember, do not summon that, which you cannot unsummon.
Translation: I don't think free energy will pop up no matter how you turn them.