Inserts in Gutterman spools?
Hi All,
A complete beginner question. I'm using Gutermann upholstery thread on 325yd spools (like this picture I tried to attach, though I don't see that it's showing up.)
They all have a dark plastic insert in the bottom, removable.
All the inserts have a little accidental looking tab of plastic inside the cylinder, partially blocking the cylinder, that keeps it from sitting on the machine's vertical spindle.
I've been prying out the insert and letting the spool spin kind of loosely. The alternative is to drill out the tab.
How are these supposed to work?
Thanks in advance.
Doug