I dyed pieces of silk gauze and silk chiffon the same color as hunks of wool roving. I used Ball jars and separated the silk fabric from the wool roving.
I first soaked the silk fabric in a combo of vinegar and water for about 15 minutes. I did not soak the roving but added the vinegar later as explained below.
I put 1 tsp of acid dye powder into a quart Ball jar and then added 16 oz of very hot tap water (I used my instant hot water faucet)using a chopstick to stir. It was really handy since the Ball jars show the measurements on the side. I then poured half of the mixture into a another Ball jar; this way I have two batches of the exact same dye, one for silk and one for roving. I then added more hot tap water filling each of the two jars almost 3/4 full. I then placed the silk fabric in one jar and the wool roving in the other.
Repeat the process for as many jars as can fit into your pot.
I used a big lobster pot with a inside steamer. I placed the jars into the steamer and added water to come up about 1/3 of the way around the jars. I put on the lid and let the jars steam/simmer about 20 minutes. I then added 1 T or so of vinegar to the jars with the wool roving, gently stirring with a chopstick. I then let the jars simmer another 20 minutes. After that I shut off the burner but let the pot sit until the jars were cooled...or somewhat cooled since I am always in a hurry.
The water remaining the jar should be somewhat or completely clear when you remove the fabric and the roving. I rinsed the silk fabric but did not rinse the roving since I did not want to take the risk that it would felt.
I drained the roving on a dish drainer in the sink and then put it in my spin dryer. I put the silk fabric in my machine dryer.
Love, love these vivid colors.
Wool roving on the left and matching silk fabric on the right.