Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Process 2. - Work the hair and grain of as soon as taken from the pack, with a scraper or beaming knife, upon a half round or flat surface. Be careful to take off all the grain while the pelt is wet and soft. After graining, put the pelt to soak for a half hour, then wash clean, and immerse it in sour milk for a few hours, to neutralize the lime and alkali still remaining in the skin.