Copper Sulfate Crystals - 16 oz - Wholesale Fiber Content_Gotland The slowest and most precise

The slowest and most precise needle available — not suitable for any work other than final-stage micro-detail and precision finishing

Quantity: 15 wooden holders

palest almost-white cool grey

Yes — the four-sided star configuration moves more fiber per punch than a three-sided triangle

Top'Roving Length: 4 meters per 100g(approximate)

Copper Sulfate Crystals - 16 oz - Wholesale Fiber Content_Gotland The slowest and most preciseCopper sulfate, when used as a mordant is similar to iron in darkening the dye colors but it is less harsh on the fibers. Copper sulfate is sometimes listed as copper sulphate or copper vitriol. Copper sulfate can be used on all fibers and usually improves the color fastness of plant dyes. Copper sulfate tends to make colors greener or browner in tone.