Amateur mechanics ... a book for old and young who like to make things .. (1907)
Popular mechanics magazine, Chicago. [from old catalog] · Chicago, Popular mechanics · leaf 44
cover the pattern is then sifted into thedrag, which is then filled level with the top with un-sand. This is rammed down slightlv withthe rammer and then more sand is added until itbecomes heaped up as shown at B. It is thenrammed again as before. It is impossible to describe just how hard a… … n H - • : -:-• IN G r or1
Handicraft · Amusements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
