Sigils can be creating using any medium you want, but personally I like to draw mine, there’s something about drawing the lines or creating the artwork that really connects with the subconscious. But any method that gets the job done is the best method for you.
Destroying the sigil after the working has two effects. One is to “send” the sigil off to the aether, the other, and more important, is to prevent you from “lusting after results”. Once you get into the whole thing and have been doing it for some time you will find that you don’t “lust after results” after the working anyway. At some point you start to realise what that feels like, where your thoughts start to go, and you can then cancel it all out.
Of course there is another reason you would destroy the sigil…what the hell do you do with it afterwards? I hate throwing things like that into the bin unless it is of an expulsory nature, so, burn it and let the smoke carry it into the aether, seems practical.
On that note however, been watching the evocation video and such by EA (Mr Koetting), and there is another level here that has sprouted a question for me. The sigils I am talking about above are those that you create yourself with a specific will intent, the usual Chaos Magick stuff. However, if using the sigil or seal of a demon instead, what would be the result of burning the sigil? To me it all comes down to the intent and the energy sharing, and if by burning the sigil of a demon your mind is saying “Oh, I’m burning the demon” then that would no doubt be a bad thing. Obviously when you are done with a sigil of a demon you could store it away as you would no doubt need in the future, but I am curious what the opinions are.