Although 17lb vellum is the best paper for the projects, it can be difficult to find.  And yes, it must be 17lb.  Anything heavier is too thick and brittle.

17lb vellum goes through the printer the same as copy paper.  You'll find it streamlines the paper-piecing process because it's smooth and translucent, thus eliminating time.  Set your printer to "Best" quality printing and give the ink a minute to dry before you start handling the patterns. 

 

Here are some quick links to the three brands of vellum that I recommend.  You can also google the b  

 

Please be sure to order your paper early so that you get it in time for the workshop.

Here are some resources and alternatives:
 

•  Simple Foundations Translucent Vellum Paper - Connecting Threads, or Joann  Fabrics

 

• Jam 17lb Vellum - Staples

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• Highly Recommended and Most economical (As Good As Vellum) - June Taylor "Perfect Piecing" Transparent, Blank Quilt Block Foundation Sheets .  Also check your local Joann Fabrics(Amazon ) 2-day delvery with Prime). Also check your local Joann Fabrics.                  Feed through your printer one sheet at a time