Does anyone have experience with invisible thread? Do you use it in both the top and bobbin? How about black cotton thread on the bottom and invisible thread on the top? I have been getting little red dots when I use red on the bottom and blue on the top.... will I get black dots on the top? The top I'm quilting has black, purple, orange, white and green squares in it. I will use black for the black, purple for the purple and want to use glow-in-the dark invisible thread for the green, white, orange fabric.
Advise please!
-- Jo in Scotland