MonoPoly™ Invisible Thread in clear is a go-to choice for sewists who want invisible appliqué that looks seamless on the base fabric.
Reviewers say it glides through the machine without twisting, breaking, or lagging. One reviewer who had given up on earlier monofilament threads said this one was easy to handle and thread, and another said it sews like a dream.
For machine appliqué of thick or dense pieces that are hard to pierce by hand, customers report it makes the job manageable. Several also mention the time saved by not switching thread colors for each appliqué.