While cleaning out the house at my Aunt's, I found several King size flat sheets. They had a King size water bed. I have used 2 of them so far on donation quilts. One was a solid blue the other was a funky blue/green print from the 70's that worked perfect with the bright funky top.
No problem with the tension, and these sheets were super soft from many washings.

As long as the sheet is a low thread count and cotton it will work even for handquilting. It sure saves a lot of time on seaming etc.

Me too on DSM and no problem..love the weight and feel In fact I used white and then dyed them to match top...some came out looking like tie dye and I loved the look

Have used sheets for backing on my longarm, no problems.

My mother, grandmother and great grandmothers all use(d) sheets for backing. I have only done 5 quilts, but have used sheets on 3 and fleece on two...but I hand quilt using a lap frame. We try to use 300tct to 400tct, Mom says anything higher is TUFF on the fingers. 300tct does not pill, feels nice on the skin and launders really well.

Walmart has great economy priced sheets in great colors and some have come from the thrift shops...lots of Martha Stewart flat sheets and Better Homes and Gardens.

I've use them also with no problem on my DSM.
I just make sure they are low thread count. I usually get them at a Goodwill type store and pick the softest.
They work great

I use sheets most of the time. I quilt my own quilts (I have a hobby quilting frame) . I have never had a problem. I like your colors. Sometimes you can match a quilt back a lot easier with sheets.

I use sheets a lot, especially for charity quilts as they launder so well, have had no problems at all.

Thanks for all the replies and compliments. I will forge ahead with this sheet and quilt on my HQ16. Will post pics when completed.

I'm a new quilter, but all I've ever used are sheets for the backing. I took the first quilt to the quilt shop to be longarmed, and they told me no problem in using sheets up to 50/50 cotton/poly. I buy most of mine from thrift stores for $1-3. each depending on size. Can't beat the price.