4
The orifice has a removable nylon bushing inserted that gives you the
choice between an 8 mm (5/16") or 12 mm (1/2") orifice. The smaller
diameter orifice is beneficial while spinning finer yarns.
Tips and troubleshooting
To evenly build up the yarn on the bobbin, you can move the yarn guide
slide as shown on the pictures below.
Toward yourself:
Away from yourself:
If the yarn guide becomes too easy
to slide on the flyer arms, you can
use a pair of pliers to tighten the
guide, pushing it together where
the metal wire enters the plastic
part.
Because it is a spring wire, you
have to squeeze so far that it does
not spring back completely to the
old position. If you tighten it too
much, it is hard to open it again, so
the best way is to squeeze it a bit
more each time, and re-test.