Rocker & Quick Change Tool Posts, Boring Bar Holders, Locking Levers
Last updated on Tuesday, September 19, 2023 04:43:48 PM Mountain US Time Zone

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Rocker Tool Post, Handle Upgrades,
Tool Posts, Cutoff Tool Post, Tool Bit Height Gauge
Quick Change Tool Post, QCTP Tool Bit Holders,
Boring Bar Holder, Boring Bar Sets, Eccentric Tool Holder

Rocker Tool Post
 
Rocker allows adjustment of the tool bit height.
Uses a machined, 1-1/2" diameter, steel rocker.
Three rockers were cut from one turning. Milled
post using a rotary table. Adjust tip height to 1-1/4".

Exploded view of a rocker-style tool post made from
a standard tool post. See small manual rotary table.

Handle Upgrades

Taig OEM tool post with fabricated steel
bushing & ratchet-type Zinc alloy handle.

Note recessed area around the bolt for good
clamping forces. Steel T-nuts are better.

Tool Bit Height Gauge

A brass tool bit height gauge to quickly set the tip at center (1-1/4").
Can be used for setting boring bar & cutoff tool heights, too.

Added 10-32 threaded ratchet levers to all
tool posts. Made SS spacers that sit inside
the counterbored hole. Used a brass
washer & a length of 10-32 threaded rod.

Tool Posts

Top row: rocker & standard posts.
Bottom row: backside tool post, backside
cutoff tool & boring bar holder.

Cutoff Tool Post

Cutoff tool blade is used upside down at the backside.
The tool works well & blade is easily re-sharpened.
Uses a standard 1/16" x 1/2" x 4" cutoff blade.
Superior to the 1/4" x 1/4" shank cutoff tool bit.
All-steel construction. This cutoff tool blade holder
was also adapted for use on the 9x20 lathe.
See T-bar Cutoff Tool.

Standard tool post modified to
hold an 8mm indicator holder rod.

Quick Change Tool Post (QCTP)

QCTP Tool Bit Holders



A threaded ratchet lever eliminates
the need for a hex driver. Used a
1/4-20 threaded rod & a brass washer.

Boring Bar Holder

A simple 3/8" boring bar holder for the lathe.

Boring Bar Sets

3/8" shank, brazed carbide insert & Cobalt-steel
boring bar sets with a fixed-position, boring-bar holder.
This holder uses two tie-down bolts.

Eccentric Tool Holder

This type of boring bar holder uses a
3/8" precision reamed, split brass
eccentric that allows adjustment of both
the boring bar height & rake angle.

Note both the small shoulder (right side of the brass part)
that bears against its base & the center, retaining groove.

Front view. 10-32 cap-head bolts clamp the eccentric.
The A2ZCNC T-nut is on a 10-32 threaded rod &
tightened/loosened by a zinc ratcheting handle.

Bottom view. The area around the hold-down bolt
was relieved to insure good clamping contact
 for the entire bottom surface. This is the same as
found on the bottom of a standard Taig tool post.

Used 10-32 thread, die-cast zinc ratcheting
locking levers for the Taig carriage stop rods,
carriage lock & the tailstock. Used
same style levers for the Jet lathe.

For a smoother finish, lock the carriage
when performing facing or cutoff operations.

Contacting dissimilar metals (steel, brass, aluminum)
allow smoother locking/unlocking action.

Rocker Tool Post, Handle Upgrades,
Tool Posts, Cutoff Tool Post, Tool Bit Height Gauge
Quick Change Tool Post, QCTP Tool Bit Holders,
Boring Bar Holder, Boring Bar Sets, Eccentric Tool Holder

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