I built both of these for others. The Gusli is for Lady Sally's daughter who has gotten involved with the Society for Creative Anachronism. She has a Novgarod Russian persona and the Gusli is modeled after one from about 1250, which was discovered in an archeological dig in that city.
The Rabel is intended to be finger fretted. Right now it has very short temporary strings on it that came from a violin, I think. The instrument is only 24" from tip to tip. I'm giving it to a woman who lives at the marina, who is a violinist/cellist and folk instrument aficionado (she also plays at dulcimer). I'm not sure what will happen to the ends when it gets 'real' strings....