Here is some Fil-Tec from All brands.
http://www.allstitch.net/department/...read-10484.cfm
An Amazon listing for pre-wound bobbins
http://www.amazon.com/Prewound-Weigh.../dp/B00M3GTZCS
Kens Sewing has a Janome spool
http://www.kenssewingcenter.com/jano...l-p-29726.html
Superior Thread had some on display at the International Quilt Festival in Houston in 2015. I can't find it on their website. You may need to call them.
Last edited by Barb in Louisiana; 01-03-2016 at 06:17 AM.