First let me tell you that this information is not to teach you how to conjure up a spirit. It is simply shedding some light on one of the tools used in the Art. Ah yes, the Triangle of Solomon is the second most important tool for the conjuring magician next to the magical circle.
The Triangle of Solomon is used in conjunction with the magic circle. It is to sit outside the magic circle just a few feet away.
What is it and what does it do, you ask?
It is used in the conjuring of the demonic or celestial/angelic spirits. It is in this triangle that they will appear and are forced to obey.
Why will it make them obey?
Because it has 3 Sacred names of God - Tetragrammaton, Primeumaton, and Anaphaxeton one on each side and it has the name Michael (Archangel Michael) which is split into 3 sections MI-CHA-EL. This keeps the spirit from escaping and compels them to obey. This does not mean in every case they are going to obey you, but it helps in the process. Some magicians such as the great Crowley would use fresh blood of a sacrificed animal in the triangle to attract the demon. For Blood is the life force and demons thrive on it.
Crowley would Sacrifice three white doves and pour the blood into each corner of the Triangle. The Demon would stay until the life force was exhausted, then the demon would leave. This is not something for you to be going out and try. Those of you whom are reading this are not the experienced and you would only end up possessed or dead. This is just for your interest and thirst for knowledge.
How to make the triangle
1. You can trace it on the ground in dirt or sand, although this is not the best way to do it.
2. You can make one out of wood and and paint it. The Triangle and the letters should be black along with the black circle in the middle of it. The interior should be white. You can do it differently if you so choose, the choice is yours. With this method you can set it on the ground and take it with you when you are done with your magical operation. These two methods are good for if you are trying to conjure the Spirit into the physical. The best dimensions would be 36"x36"x36".
3. Now the other method is for conjuring the Spirit into a crystal ball that is placed in the middle of the triangle or using a black mirror in the middle of the triangle. With this method one conjures the Spirit but one must skry or see onto the astral plane where the Spirit is. The mirror or crystal ball only acts as a focal point. You can set up the Triangle on a small round table and place a crystal ball in the middle or you can prop up the triangle so that it is standing up and gaze into the Black mirror.Once again you must be able to skry or should I say, have astral vision, that is to see onto the astral plane. Those whom have not developed this ability will have no success. This takes a lot of practice on crystal gazing or skrying with the black mirror which is something you can do without conjuring any spirit and develop your astral vision and psychic senses.
Anyway, now you have a little more knowledge to save for a day when you are ready to use it