Changes

==Instructions==

==Instructions==

*This is basically a big, solid tap wrench held rigidly perpendicular to the bed. The taps are held by a set screw in "adapters" which are in turn snapped into "masters" that fit into the bottom of the column. Tap the hole by aligning the tap with the hole and turning the handwheel. Allow the tap to pull the column down, as you would with an ordinary tap wrench. Observe the same procedure as with a standard tap wrench, drilling the proper size hole for the tap, reversing the tap periodically to clear the chips, and so on.

*This is basically a big, solid tap wrench held rigidly perpendicular to the bed. The taps are held by a set screw in "adapters" which are in turn snapped into "masters" that fit into the bottom of the column. The adapters have been broached to have a square area to accept the square end of a tap, when inserting a tap into the adapter make sure it seats in the square area.  Tap the hole by aligning the tap with the hole and turning the handwheel. Allow the tap to pull the column down, as you would with an ordinary tap wrench. Observe the same procedure as with a standard tap wrench, drilling the proper size hole for the tap, reversing the tap periodically to clear the chips, and so on.

A chart that gives the proper drill size for a given thread is hanging on the wall in Cold Metals.

A chart that gives the proper drill size for a given thread is hanging on the wall in Cold Metals.