quiltmouse

I read in someone's post that they had gone thru their mom's thread & tossed a bunch of iffy ones.

I know there are many different ways of preparing fabric ends when prewashing fabric. I havent done the pinking one, but I have tried the snip the corner off one, it was moderately successful.

I save the junk thread in a specific ziplock bag in my thread bin. I use it on the serger or sewing machine and run a line of stitching down the raw edge prior to prewashing. On the serger, use the best one for the needle. Also, make it a bright or off color to the other two threads, then you just pull it out. I don't like to leave the stitching in as it does distort the fabric a bit. On the sewing machine, use the best in the bobbin if that one pulls out easier for your machine.