hzeirvogel,
Sure if you want to pretend to do sword form and wave your arms about a bit, any old stick will do:erg: However if you really want to learn sword form you need a double edged blade of the correct length and balanced fairly well. Forget the wooden ones they are useless!!! A good sword can be expensive, but you can certainly pick up an adequate one for about $150. But try it out first for feel and balance. Don't just buy on e-bay. The reason of course for needing the double edge is in the applications. Sometimes it is the upper edge that cuts, sometimes it is the lower edge. The tip of the sword is used for nicking tendons and arteries, the middle is used for long cuts and the part of the blade nearest the hilt is used for blocking. So you need to know which part of the sword you are using for which purpose. Other than that its OK to dance around with a stick:rofl:
Very best wishes