。
If you use sumi ink as a dye, you can make interesting patterns.
Literal
Ink [object-を] dye [as-として] use-[when-と] interesting pattern [subject-が] can-be-made-[polite].
墨 ('ink,' the traditional Japanese black ink used in calligraphy and brush painting, made from soot and glue). 染料 ('dye, dyestuff'). ~として ('as X, in the capacity of X') marks a role or function. ~と conditional ('when X, Y') here for natural consequence. できる used intransitively means 'arise, come about' (patterns form). A sentence from a traditional-crafts or art context.