Colorfast Testing for Needlepoint Threads
Testing to see if a needlepoint thread is colorfast can keep a beautiful piece from being ruined when blocked using water. Many threads (especially hand-dyed ones) are not fast and will run if wet blocked.
It’s easy to do and will take less than 30 minutes.
- Remove your thread from its packaging and open out the skein if necessary. Do not cut it.
- Get some white (not colored or printed) paper towels.
- Gently, but thoroughly, wet the skein of thread.
- Gently wring out the excess water.
- Fold your paper towel in half and place the skein on it.
- Now fold the paper towel over it and blot.
- Check the towel — is there color on it? The dye is not fast. Replace the towel.
- Let the thread dry, check the towels again — is there color on it?
Sometimes the excess dye is removed by rinsing the thread again, so repeat the process.
- If there is still dye on the towels, the thread is not colorfast and should only be dry-blocked.
Colorfast Testing Tips
Be sure to give instructions to your finisher that your piece should be dry-blocked if any of your threads fail this test.
In general, if one thread from a line isn’t fast, I suspect all threads from this company will run
Because of EPA regulations, many colors, especially dark, vivid colors and most reds, tend to run.