backing machine for sand core

Paizo

Paizo will pay the first $10 in shipping and handling for any shipment of products totalling $100 or more

Backing Define Backing at

noun 1 aid or support of any kind 2 supporters or backers collectively 3 something that forms the back or is placed at or attached to the back of anything to

History of Sandpaper

Although Isaac Fisher JR patented the first process for mass manufacturing of sandpaper in the United States in 1834 sandpaper was used as far back as the 13th