QUOTE(Dasao @ Dec 25 2007, 08:56 PM)
More on topic, does it matter so much if the base is man-made like plastic? I wouldn't think it would make a difference
All matter is the expression of spirit, therefore all matter is suitable for magick.
So, with that in mind, whatever works for you, spiritually and psychologically, will anchor magickal intention.
Now, the other side of that is the saying - as above, so below. This is where correspondences come from. Material patterns are expressions of subtle or spiritual patterns. Every material object is an expression, therefore each material object is suitable for some kind of magick, manmade or not. But, what you have to think about is what spiritual ideal the physical object is an expression of (and when I say 'object' I mean all manifested things, including sounds, colors, smells, etc.)
The only way to know experientially - and therefore, for certain - what energies are expressed in various objects, is to see them from a higher sphere, particularly in scrying Samekh, the path between Tipareth and Yesod (which is a hermetic bias on my part, of course.) But, there are a lot of books and papers on correspondences.
Plastic, I have found, is resistant to natural energies - it's difficult to accumulate elemental or planetary energies in plastic for this reason. Whether or not you can anchor a servitor to is not the question, but rather, in doing so, what properties will you imbue in the servitor?
So what are the properties of plastic? It's malleable and diverse, for one thing - we make millions of things from plastic - which may be a plus. It is weak against fire, however, so that may be a minus, when it comes to protection elements. Plastic doesn't decay - at least not in the short term - so it represents a resilient energy (some servitors, like ideas, dreams, etc., will decay over time in the weather of the astral, after a fashion).
Also, another consideration is, does the plastic base inspire you at all? One of the plusses to using crystals, metals, etc., is that they have always fascinated us as humans, partially because of how they look, what they feel like, etc., they inspire the imagination and give us a sense of connection to something. It will be difficult to use something for magick that you do not perceive as magickal.
Of course plastic has other properties, it's something that, as a magickal material, hasn't been explored very much, but it's possible to speculate, and apply the hermetic axiom - as above, so below - to understand what potentials it has. Do some research on plastic, put some consideration into it, and then make your decision based on those conclusions and/or intuitions. And for that matter, come back and share them with us!
Peace