Popular Mechanics Plans-Plans For Horizontal Bench Milling 195X.pdf

URING the late war, machines which for the bolts are 3/8 in. deep, and tapped
D required massive castings in their with a 1/4-in. bottoming tap. The base
design were built with beds of cement or is a piece of 1/2-in. cold-rolled steel, or
concrete, simplifying the work of con- iron, and is fastened to the front slide
struction, and providing a means of mak- by means of two 1/4-in. flat-head screws,
ing very heavy machines with a minimum countersinking the slide for the heads,
of large castings. This method can be so that they will be flush with the
adapted to the use of the mechanic in the surface. The spindle and overarm pipes
small shop, and by using bination of are fastened to the front slide by means of
cement and cold-rolled steel, small ma- flanges, the pipes being bored—the over-
chines can be constructed sufficiently arm pipe to a sliding fit for a piece of
strong to stand a considerable amount of l 1/4-in. cold-rolled steel, the spindle pipe
heavy work, while eliminating entirely a to fit the two bronze bushings which form
body casting. the spindle bearings. These pipes must
The bench miller described in this article be fitted absolutely square with the front
is an example of this method; only one slide. A bolt and pipe, with a flat piece
casting is employed, and the rest of the of steel, will be seen at the bottom of the
machine is of such constructi