Have any of you that are interested in using steel strings on the MicroBass actually looked inside the sound hole with a mirror? There is an X brace near the sound hole but back by the bridge area there is nothing but the sound board. The Pahoehoe strings only produce 40 lbs of pressure total of all strings. What will the pressure or tension of the steel strings be? I doubt that the instrument will hold up to the steel strings. But I am willing to be proved incorrect. I highly suggest you look inside the MicroBass and see how it is made.