70/10 or 80/12
#5
#6
Power Poster
Join Date: Dec 2008
Location: Western Wisconsin
Posts: 12,930
I use a 70/10 needle with Aurifil 50wt, which is a 2-ply thread. My seam allowances are more accurate (and flatter) using this thread rather than the standard 50/3 I used to use, and the finer thread allows me to also use a finer needle with no problems. When I used 50/3 thread, I used a 80/12 needle.
#8
Super Member
Join Date: Jul 2014
Location: Illinois
Posts: 2,140
I like a 70/10 with Aurifil 50wt, but 80/12 also works fine & I usually can find those needles a little easier. Either way works because once I toss it in the wash, the holes contract around the thread anyways as the cotton shrinks & crinkles.
#10
Super Member
Join Date: Sep 2010
Location: Heart of Colorado's majestic mountains!
Posts: 6,026
I use 80/12 for piecing with Precencia 50/3 thread. Sometimes I use Aurifil 50/3. I personally think 2 ply thread is too light for piecing. That is the reason for the 'skant' 1/4 inch seam. I like to use it in the bobbin when I FMQ with Sulky or King Tut from Superior on the top. Then I use a 14 topstitch needle. The thread never shreds when I use this combination. So, if you are buying needles I would recommend getting a variety of needles. They really do make a difference. I have always thought that many of the problems some of you say you have with thread has more to do with needle selection than the thread.