substance
Umber Rubber
A named craft material / finish lemma (Umber Rubber) drawn from public-domain workshop speech (polish / glue / earth / cement / pottery / copper / hat / turner / painters / vegetable dye).
substance
A named craft material / finish lemma (Umber Rubber) drawn from public-domain workshop speech (polish / glue / earth / cement / pottery / copper / hat / turner / painters / vegetable dye).