I don't buy pre cuts of any size. I do pre wash all new fabric in cold water. I don't have the problems others have.

I have put pre-cuts in a pot of boiling water few a few minute, dump in the sink and hand wash. Then I lay them out flat to dry, usually outside in the shade. A little more work, but less worries later.....and some of those batiks bled like crazy.

If you are concerned about the color bleeding, wash one piece to check. Even if it bleeds, I would be more likely to use similar colors and then a color catcher when done. ONCE, ONCE I washed some precuts. The amount of raveling, tangling and ironed that resulted had me pulling out my hair!

Oh don't do it. You will most likely regret it. I know I did. Just sew together and wash the quilt with a color catcher.

I have to prewash all fabrics due to medical conditions. Use a gentle cycle on washing machine. I do a lot of scrap quilting & have aquired fabrics from other quilters that are odd shapes, I prewash them on gentle cycles. I also use color catchers. All above comments very useful.

I don't prewash anything, I wash the completed quilt in cold water with a few color catchers before gifting. Never had an issue but I'm not a fan of batiks either so I haven't made anything with that type of fabric in years.

Nanachar, I'm glad you got the info from the company that makes them. It makes perfect sense to me. I don't often use precuts, but would not wash them because I wouldn't want to do it by hand, and I'm sure they'd fray out too much to use if I put them in the washer. My high efficiency washer ties things into knots

I wash my pre-cuts because of the chemicals that bother my finger tips and finger nails. I have used the garment bag in the washing machine - it was okay but a royal pain taking the piece out of the bag. Not much in the raveling department - just tangled. My chosen method is to put them in the kitchen sink or a washing tub with a bit of detergent and then rinse and place in a salad spinner. I bought a laundry rack to hang them on to dry. One can use a plastic hanger too - but I like the rack because when I am putting strips I use it to keep them organized. If I have washed the 5 inch precuts - those I just lay out on a towel on the kitchen table - the don't take long to dry and I have used the iron to speed the process a bit.

One of my LQS's had weekly quilting tips online from various sources. One was from YouTube, featuring I think, Laura. She suggested using a salad spinner to agitate small fabric pieces for prewashing.

Thank you all for your comments! I have been quilting for almost 40 years but have just started to use some precuts. I especially liked the comments about using a salad spinner after sink washing, should I Decide to wash, first. Who knew a salad spinner could show up in my quilting supplies��