Primary version of String Theory a.k.a. Bosonic String Theory was created in 1970. Present String Theory - Superstring Theory from 1984 take Supersymmetry into consideration (1971). One of Superstring Theory versions is a particular case of two dimensional p-brane from general M-theory (1995), that is 2-brane. String Theory predict that space, in which we are living, has at least 10 dimensions, 3 dimensions are open and others are reduced to subatomic sizes. In my instrument these strings are hooked on the bridge and the saddle on the other side. Their tension can be adjusted with worm gearboxes. The bridge is hooked on two pins, which are fulcrums and tonnage of strings is balanced by two springs fastened to a piece of aluminium which is attached to a bottom side of a guitar body. Using two screws it's possible to adjust position of the bridge in a plane parallel to the board and also influence the tension of strings. There is also a wire from electromechanical mechanism soldered to it. Thanks to that touching strings during playing in heavy electromagnetic activity field helps reduce hum.
Electromagnetic mechanism is a structure of three pick-ups, two of them are singles and one is a humbucker, which means two coils winded inversely in relation to the ground, which reduces some hum itself. Switching between these coils is realized by 5-positional switch, while two potentiometers which knobs are at the top side of a guitar body enable volume and tone regulations of a signal derived to a "jack" plug attached to the edge of the board coloured like a finnish sky.
In Finland kantele is acknowledged as a national symbol. Mythical creation of this instrument describes national epic novel Kalevala. According to it the founder of kantele was hero Väinämöinen. He uses reindeer's bones to construct it, strings was hooked on pike's jaws, which were descended from horse's tail that belonged to demon Hiisi.
In my guitar, board is made from quite hard wood and it's a separate part from neck and thanks to that it's possible to take it to pieces and put to a rucksack for example, of course after taken strings off. Guitars are often made from one piece of wood to obtain better sound propagation from strings that vibrate little more stable and longer then thanks to greater resonance (but just a little). Neck was cut off at the end and the head was carved separately and glued after that to cut the lines of grains in the wood and to reduce the risk (which is small anyway) of cracking the neck, which tension (and by the way the distance between neck and strings) can be adjusted with a special rod builded in. The neck is quite thin and frets also, so in Vai style rather than Malmsteen's, but i play with thick picks, about 2mm.
I've got it for 7-8 years and since that time it spoiled a bit, the board has some scratches, "jack" plug relieved. I made scalloped fretboard with knife and files, not to thorough, but I wanted it that way (it's made from hard ebony wood) just not to grapple the fretboard with fingers during playing and to have greater ability of tremolo. I rubbed off most of lacquer from the head and grinded edges, now it looks cool. I should change the bridge long ago, because I can't even adjust active length of a string separately, which hampers tuning the instrument right on the octaves, floyd-rose would be useful. I should also change coils from "no names" to Duncans for example. Besides I'm planning to match fretboard with diodes, but first I need to calculate resistance and loading current capacity with efficiency of batteries. But first I need to have some sleep, because it's 6 o'clock in the morning, but when I wake up, it would be worth to fix some things in the universe.
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