Pre-Wash Black Cotton?
#2
Super Member
Join Date: Dec 2010
Location: Chula Vista CA
Posts: 7,402
Any color can run. I once had a black lose so much color, it had spots of light and dark, I had to take it back. You can cut off a piece and place it in a glass of water for a couple hours to see if it will bleed.
#9
I bought some black fabric from my local quilt shop. Since I planned to use it to frame off-white pieces, I pre-washed and used 3 color catchers, which came out pitch black. I washed 3 more times with color catchers before they came out light grey. I think it depends on what you're putting it with. If i were putting it with very dark colors, I would still pre-wash, but be less obsessive about it, but I think you need to be cautious with black.
#10
Power Poster
Join Date: Dec 2008
Location: Western Wisconsin
Posts: 12,930
It really depends on the fabric. I have had blacks that did not lose any color, and blacks that were over-dyed a lot. If you are not sure and don't want to prewash unless absolutely necessary, test the fabric. Cut a small swatch and drop it in a glass of water. Let is sit for a day and see if any dye bleeds into the water. Also, take the damp swatch and rub it against other fabrics to see if any black transfers. If the fabric fails either test, I would prewash it.
I agree that black is often like red in terms of bleeding. I have had both be non-bleeders and both be bad bleeders.
I agree that black is often like red in terms of bleeding. I have had both be non-bleeders and both be bad bleeders.
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