head 26amp 3b block spare part for crusher
b) You can pick up 1⁄4 in. just by using an "A" series sprue bushing with its 5/8-in.-thick head instead of a "B" series with its 7/8-in.-thick head; c) Never let the head of the bushing seat directly against the back of a cavity block, runner bar, or any other mold insert, …