Hmm, half way between wummer and sinter or sinter and wummer would lead me to imagine that they should be more correctly refered to as fring and spall or fang and sprill.

I took a soundboard from a 100 year old German piano (the piano didn't work anyway) and "reinguitarnated" into the face of my resophonic guitar. The guitar I built is my own unique hybrid cross between a Dobro and a National style resonator so I call it a "Nobro".