On a standard 6-hole bridge, each string is tied with a loop-and-wrap knot that sits on top of the tie block. A 12-hole block adds a second hole behind each string hole. The extra hole gives the tail somewhere to go, so the string locks around itself with a simple loop instead of a series of wraps. Some 12-hole blocks are built into the bridge, and others are retrofit pieces that sit over the original block.
How to string one:
- Feed the string through the front hole from the soundhole side, leaving three or four inches out the back.
- Bring the short end up over the tie block toward the soundhole.
- Tuck it under the main string to form a loop.
- Feed the tail down through the second hole for that string, so it exits under the back of the bridge.
- Hold the tail and pull the main string toward the headstock to close the loop.
- Tune to pitch, let the string settle, then trim the tail under the bridge.
The string still has to clear the saddle at a clean angle and seat in its nut slot, so check both once all six are on. The same order applies as on a standard bridge: change one string at a time, starting with whichever string you usually replace first.
Any tie-end string works on a 12-hole block, including our Classits SCM101 and SCH102 sets, Classits Elite ECM101 and ECH102, and the plain nylon singles C-1ST, C-2ND and C-3RD. Sets are in Classical Strings and singles in Specialty Singles.