Zakładanie strun

 
Stringing

Picture 1:
The openings for the tuning pins are first plugged with hard wood dowels . Then holes are drilled into the wrest plank which are somewhat smaller in diameter that the wrest pins for a tight fit.

Picture 2:
Before putting on the strings the height of the back pads has to be adjusted and their position checked

Picture 3:
The pressure bar of an upright is adjusted to warrant the precise down pressure on the strings

Picture 4:
The wrest pins are driven in by hand and glide accurately into the predrilled holes.