How you prepare your different fabric types for different dye baths, very much matters, and is the most important part of this process. The tone of one piece to another in the same dye pot will differ dramatically. This is based on the type of fiber (protein or cellulose), the way we prepare it, as well as the way the fabric is manufactured. The dyestuff itself will also respond to the different ways you prepare the material.
Substantive dyes (lichens, oaks, Japanese maple, pomegranate skins, sumac, black tea)
Dyestuffs that are naturally high in tannins, do not need mordants, but they will benefit.
They can also be used to prepare fibers or along with mordants but will affect your color as they have their own tone.
Adjective dyes need a mordant to bond with fibers. The mordant enters the fiber, the dye follows, reacts, and forms a bond.
Estimated Dye Weights
small cotton bandana 1oz/28g
large cotton bandana and standard silk bandana 1.5oz/43g
standard linen bandana 3oz/85gÂ
medium cotton Tshirt 5oz/142g
1-yard lightweight fabric 5oz/142g
1-yard medium weight fabric 10oz/284g
1-yard heavyweight fabric 20oz/567g