Superior MicroQuilter 100wt Polyester Thread
MicroQuilter is Superior Threads' ultra-fine 100-weight 2-ply polyester — the lightest, finest thread in their entire lineup. At 100 weight it's significantly finer than even the 60wt Bottom Line, producing stitches that virtually disappear into the fabric and allow the quilting design itself to do the visual work. This is the thread of choice for micro-stippling, wholecloth work, and any project where the thread should be seen as little as possible — just the stitch definition and the shadow it casts. The workhorse colours have dedicated guides — 7001 Natural White, 7002 Lace White, and 7010 Black — and the full palette is mapped in the colour range guide.
Why 100wt for Longarm?
The ultra-fine construction runs through the needle and bobbin with minimal friction, enabling high-speed micro-stippling and very tight stipple grids without thread buildup or tension issues. The polyester construction means consistent tensile strength even at the finest weight — no breaking, no skipped stitches. Available in 30 solid colours from natural white through black, covering the full working range a longarm studio needs.
Available Colours
7001 Natural White, 7002 Lace White, 7003 Off White, 7004 Cream, 7005 Tan, 7006 Champagne, 7007 Silver, 7008 Gray, 7009 Dark Gray, 7010 Black, 7011 Baby Yellow, 7012 Yellow, 7013 Gold, 7014 Baby Pink, 7015 Red, 7016 Bright Red, 7017 Baby Blue, 7018 Light Blue, 7019 Medium Blue, 7020 Dark Blue, 7021 Turquoise, 7022 Light Turquoise, 7023 Baby Green, 7024 Green, 7025 Sage, 7026 Taupe, 7027 Copper, 7028 Medium Brown, 7029 Dark Brown, 7030 Purple.
Frequently Asked Questions
What needle should I use with 100wt MicroQuilter?
Go small: a 70/10 or 75/11 on a longarm, or a 60/8–70/10 microtex on a domestic. A fine needle keeps the hole size proportional to the thread so the stitch truly disappears; running 100wt through a 90/14 leaves visible needle punctures around an invisible thread.
Can MicroQuilter go in the bobbin too?
Yes — running MicroQuilter top and bobbin gives the flattest, most invisible stitch there is, and the fine weight packs enormous yardage onto a bobbin, meaning fewer changes during dense micro-work. Many quilters alternatively pair it with 60wt Bottom Line below for a touch more bobbin body.
Is 100wt thread strong enough to hold a quilt together?
Yes — the 2-ply polyester construction carries surprising tensile strength for its diameter, and micro-quilting density multiplies the number of stitches sharing the load. It is not the pick for structural seams or high-stress piecing, but as a quilting thread it is thoroughly durable.
