July August 2026 Vol. 45, Number 4

The Bosch Dividing Head – Part One
CARL BLUM
The Leonard Angle Guide
FRANK DORION
Carolyn Ann Danner: A Pioneer of Women’s Innovation in Machining
DAN WHITMAN
Engraving Machines: Features and Practice – Part Two
RONALD PIERIK
From the Editor
GEORGE BULLISS
A Boring Series: Drilling Your Way Out of Troubles
CHUCK ST. LOUIS
For the Digital Machinist: The Mini-Mill Part Two
BOB ROSWICK
The Old, Retired Shop Teacher: Broaches and Broaching Techniques Part Two
ROGER TAYLOR
Readers Forum
Chips & Sparks

Facts Only

* CARL BLUM authored "The Bosch Dividing Head – Part One".
* FRANK DORION authored "The Leonard Angle Guide".
* Carolyn Ann Danner is listed as a pioneer of women’s innovation in machining.
* DAN WHITMAN wrote "Engraving Machines: Features and Practice – Part Two".
* RONALD PIERIK wrote an entry on engraving machines.
* GEORGE BULLISS wrote "A Boring Series: Drilling Your Way Out of Troubles".
* CHUCK ST. LOUIS wrote "For the Digital Machinist: The Mini-Mill Part Two".
* BOB ROSWICK wrote "The Old, Retired Shop Teacher: Broaches and Broaching Techniques Part Two".
* ROGER TAYLOR is listed as an author.
* Sections are titled Readers Forum and Chips & Sparks.

Executive Summary

The content consists of a list of titles and names, suggesting an index or table of contents from a publication. The entries include works by CARL BLUM on the Dividing Head, FRANK DORION on the Leonard Angle Guide, Carolyn Ann Danner on women's innovation in machining, DAN WHITMAN on engraving machines, RONALD PIERIK on engraving machines, GEORGE BULLISS on a boring series, CHUCK ST. LOUIS on mini-mill instruction, BOB ROSWICK on broaching techniques, and ROGER TAYLOR. The collection also includes sections for a Readers Forum and Chips & Sparks.

Full Take

This collection functions as a curated catalog of technical knowledge centered on machining, tooling, and shop practice, suggesting a focus on practical, hands-on industrial skills across various historical and specialized areas. The juxtaposition of specific, historical machine work (Dividing Head) with modern digital tools (Mini-Mill) alongside discussions on innovation (Danner) and foundational techniques (broaching) establishes a tension between tradition and modernity in the field. The structure implies an authority built upon accumulated, specialized expertise rather than contemporary theoretical discourse. This pattern suggests a narrative where mastery is derived from demonstrated, specific procedural knowledge. The implication for agency lies in recognizing that technical sovereignty requires not just access to modern tools but a deep, contextual understanding of the historical and practiced lineage of those tools and techniques. What structures the relationship between these various specialists? How does this hierarchy of published knowledge influence who is positioned as an innovator versus a practitioner today?