Greetings Eniqmius!
I recommend that you read Kinjo post on Evocation...it's comprehensive in its scope. The actual need for equipment in Goetic Evocation has been hotly debated within magic forums for years. Most magicians agree that one needn't have the full regalia suggested by the manuscripts but, rather, the understanding of what the equipment represents within the ritual(s). This is where the question breaks down.
Personally, I made my own equipment. I learned blacksmithing, weaving, dye making, sewing, etc. and crafted the necessary equipment. If your resources are such that you cannot afford/obtain the required tools, then one should learn how to manipulate astral substance to form these items. The tools are required to focus various aspects of will to perform the task. Your mind is the key here. It is again at this point when the would be novice figures that they are on easy street. Not so. It takes time to hone ones mental abilities to take on the task of evocation. ...Let alone evoking entities that may not want to be evoked! You say that you have the equipment set out by the Golden Dawn. Then you should be aware of the various meditations and rituals involved in creating the tools. It isn't just being able to visualize a sharp sword but also just what that sword represents. In physically crafting the sword one goes through the mental exercises that form the basis of understanding the sword. I know that this is long winded but I hope that I've been able to impress upon you the need to thoroughly understand your project. There are any number of shortcuts and easy paths to this endeavor.....and just as many failures. Take time to do the work/exercises in order to succeed! You will be a better magician for your efforts! Good Luck! (IMG:
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PS Some of the entities are relatively mild whilst others will give you a work out!
If you could just ask them to cooperate and they agree, you have already succeeded! duh.....