Aurifil 40wt thread is a wee bit heavier than 50wt. Besides using it for various free motion quilting projects…

it’s great as a go-to thread weight for Hand Binding.  

The added thickness gives this thread a little extra strength when stitching binding down by hand.  Also use it to machine stitch the binding to the front (50wt all the way) and hand stitch the binding to the back with Aurifil 40wt thread.  

Side note: Are YOU a Garment sewer? You’ll be thrilled to add this thread weight to your garment construction and detail stitching portfolio.


  • A straw or milliner needle size 9 or 10 works wonderfully when hand stitching with Aurifil 40wt thread.   
  • Use a Microtex Sharp needle size 80/12 or larger for machine work with Aurifil 40wt. Use 50wt in the bobbin. 
January 31, 2023 — Jinni Beens

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