I have one machine that is picky about threads but most of the time it's operator error. My other machine will use anything and needles. I just have to be more careful with "picky"... :D

That looks like the kind of thread used in a garment factory. I love the ruler you got. Have fun!

great find. Good for you.

I put my large spools in mug and set it behind my machine :), works great!!