PJ, The Chicago is probably 1960s. The base is cast 'pot metal', probably zinc, tin or such.The helical cutters are as sharp as...a real testament to old school 'fit for purpose' manufacturing...never been resharpened! I enjoy the sound and Insense Cedar smell from each and every sharpening! The travel on the spring loaded feed device of the green one allows any length above maybe 2". Its housing is sort of a bent cast material, not like modern steel plate, but visually porous surface like cast iron. maybe someone here can explain the metallurgy, I only do wood-urgy... Cheers
Jim
Bookmarks