Originally Posted by
caroloto
I think I might be able to answer this, there is heavier higher thread count thicker Batiks, if you match your Batiks type with other non Batiks fabric you'll be fine. For example denim (Blue Jean) fabric even the 100% cotton has different weights with higher or lower thread count and thickness, you wouldn't mix the different weights thread counts thickness together or problems are sure to happen.
I disagree with this and think it is unnecessarily alarming to novice quilters. The advice to use lower thread count batiks is bad advice. With batiks, the dyes need a higher thread count to be able to handle the resist and the multiple washings in the batik making process. The designs are sharper and the colors are brighter with higher thread count greige goods as well.
Almost all batiks are a higher thread count than prints or solids and there's really no need to match thread counts within any quilt. It's no different than mixing flannel and quilting cotton. Problems are NOT sure to happen with batiks, especially if you use a microtex (aka sharp) needle.
I often mix batiks (thread count up to 200) with Kona solids (thread count of 60) and/or good quilting cottons (thread count of 68-75) and have never had a complaint from my Bernina or my longarmer. If the longarmer claims her machine "hates" the mix, perhaps you should find someone else to do your quilting. Sounds to me like she's just making excuses for not knowing how to adapt her machine to different quilting conditions.