Wonderfil Threads Use Silco thread to add more punch to your applique edges by Paul Leger December 28, 2017 by Paul Leger December 28, 2017 Welcome back! When we completed appliqueing our leaves using InvisaFil thread yesterday, the little Joyful Wallhanging is looking more and more ‘joyful’… Today we’ll add nice, puffy, clouds to our quilt top using another WonderFil thread:Silco. Silco thread is a 35wt cotton thread, but, unlike other cotton threads, this one … FacebookTwitterPinterestLinkedinRedditWhatsappTelegramEmail