Broach Cutters
A
duMont broach cutter
Precision Set 00.
There are 15 different combinations for making small keyways & bores.
Set consists of three broaches that cut 1/16", 3/32" & ⅛"
wide key ways &
five, Type A collared bushings for ¼", 5/16", ⅜", 7/16" & ½″
diameter holes.
The L-shaped shim is inserted after the first pass to increase the depth-of-cut.
Use plenty of cutting fluid & remove all chips after each pass.
An adapter was made to hold
the broach
cutter to prevent breakage. The holder has four, shank-gripping set screws (like a
4-jaw chuck).
A fifth set screw, inside the (smaller)
½" diameter end,
limits shank depth & movement under cutting pressures.
I use it in the floor drill
press.
Making a 3.25"
cross-slide
knob for the Jet 9x20 lathe.
Precision reamed 5/16" hole.
A 5/16" guide bushing inserted into the hole.
A 1/16" broach cutter held in the
floor drill press. Use
ample amounts of cutting fluid.
Perfect broach-cut 1/16" keyway to match the Taig OEM
design.
Handle installed on the improved 9x20 lathe
cross slide
using extra Taig mill lead screw parts.