glass thread

The foot at first was formed by coiling a thread of glass round the base of the waist; but, subsequently, an open glass cone was joined to the base of the waist, and a glass thread was coiled upon the surface of the cone.

This fiber, placed under a microscope, looks like a glass thread.

Well, so did boats built of glass thread and resin.

One of these is a simple cone of glass, sometimes quite plain, at others ornamented with an applied spiral glass thread, or more rarely with festoons of white glass embedded in the body of the vessel.

I expect some of the glass thread with which the hull of the ship was made could be inserted with no trouble.