I have built several instruments with nylon strings for mando tunings with success.
All are designed with a tie bridge - vs - a tail piece for the tone I was after.
The latest is a new four nylon string archtop model that can be tuned to mando/octave mando.
Dual side sound ports. No soundhole on the soundboard, but as you can hear, very good projections and sustain for finger picking. Carpathian Spruce and figured Maple.
Here is Travis Stine performing
https://www.facebook.com/15816918088...type=3&theater
https://www.facebook.com/15816918088...type=3&theater
https://www.facebook.com/15816918088...type=3&theater
Here is my friend Tim Connell on an all Koa instrument for a episode or Oregon art Beat.
http://www.roberts-guitars.com/#!media/c7zm
Working on several new instruments for Brazilian Choro Bandolim.
Mark
www.roberts-guitars
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