It is on my bucket list. I want to make it through one entire ukulele book before I shift gears to a braguinha. Or, until the next attack of UAS, which has always occurred first. But, this time I really mean it
Hm, the Braguinha seems to be very similar to the Cavaco or Cavaquinho that I have become interested in recently, though not necessarily the small Portuguese one, but the somewhat larger Brazilian or Cabo Verde style that could be tuned to d'-g'-b'-e", an octave above the Baritone. They're about the size of a Concert Ukulele, but with steel strings.
There was a Portuguese luthier at the Music China Expo in Shanghai last week. He makes a variety of fretted string instruments such as the balalaika, the cuatro venezuela and the braguinhas. I forget his name, but he was very engaging, a really animated speaker. His website is: http://apc-instruments.com/2013/index.php?route=product/category&path=103_75
The braguinha was so small and therefore difficult for me to play. It had metal strings tuned dgbd' about which I inquired. He said he uses gage 10 acoustic guitar strings. I asked about this because I had read in Manuel Morais' excellent book that the machete had gut strings but, "Sometimes, especially in the countryside, the first string is replaced by a metal string, which gives it a more strident tone, which is to the liking of the country folk."
This gave me the idea of someday installing a metal 1st string on my KoAloa soprano which is already set up with the wonderful Southcoast machete set of nylon strings. But would the tension of a gage 10 guitar string be too high, I wondered. Fortunately, the KoAloha folks were in the same building. Alan Okami and one of his other luthiers said the tension should not be a problem, however the metal string would probably cut into the bridge.