Errata
The errata list is a list of errors and their corrections that were found after the product was released.
The following errata were submitted by our customers and have not yet been approved or disproved by the author or editor. They solely represent the opinion of the customer.
Color Key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update
| Version | Location | Description | Submitted by | Date submitted |
|---|---|---|---|---|
| Printed | Page X Why I Wrote This Book |
"...flatten the CNC learning curve..." is incorrect usage of the concept of a learning curve. A learning curve is a plot of what is learned over time, so a flat learning curve would imply that nothing was learned. "Learning curve" is often misused as in the incorrectly uttered "..that has a steep learning curve," when referring to something difficult to learn. A steep plot of learning over time would suggest that the task was learned quickly, which is a good thing. The book should be corrected to say "...steepen the learning curve" or just leave out this metaphor completely to avoid misunderstandings. |
Steve M. Potter | Sep 11, 2016 |
| Printed | Page xiv Second paragraph |
The URL for errata given in the last line of the second paragraph is incorrect. The correct URL is given in the copyright information inside the front cover. |
Robert Pendleton | Sep 26, 2017 |
| Printed | Page 14 1st paragraph |
"'Large format CNCs capable of cutting standard 4-inch x 8-inch sheets of plywood are now widely available....." |
Eugene Nejtek | Sep 05, 2016 |
| Printed | Page 42 Spiral upcut and downcut section |
The upcut endmill produces a clean edge at the bottom of the stock with tear-out on top, and vice versa with the downcut endmill. These are backwards in the 3rd paragraph. |
Steve M. Potter | Sep 11, 2016 |
| Printed | Page 49 Figure 3-9 |
The figure needs labels "Conventional" (left) and "Climb" (right) on the drawing, and the caption should match the fact that conventional is on the left by listing that first and climb second. |
Steve M. Potter | Sep 11, 2016 |
| Printed | Page 51 CNC Math |
The preface to the equations says "...settings for any given material." But material properties are not referenced in any of the equations. How do they take account of the material? I am guessing that the preface should end with "... settings for any given end mill." But, that is only a guess. |
Bob Pendleton | Sep 26, 2017 |
| Printed | Page 54 last paragraph |
"...slightly smaller than the diameter of the cutter shank..." |
Steve M. Potter | Sep 11, 2016 |
| Printed, PDF | Page 86 In the general note, top of page |
The link to download the Inkscape wooden racer file is missing. It shows http://DOWNLOAD-LINK-TBD.html |
Enrique Condes | Dec 02, 2016 |
| Printed | Page 87 Figures 6-8, 6-11,6-12,6-13,6-14,6-15 |
The text in these figures is unreadable in the printed copy of the book I have. |
Bob Pendleton | Sep 26, 2017 |
| Printed | Page 98 Figure 7-2 |
As this section is about the leadscrew and nut, these should be depicted clearly in the photo. They are out of focus and not very informative in this photo. |
Steve M. Potter | Sep 11, 2016 |
| Printed | Page 99 Rack and Pinion section |
Why not call the pinion a pinion, instead of a sprocket? Technically, a sprocket is designed to roll against a chain or surface with holes in it, not a rack with teeth. |
Steve M. Potter | Sep 11, 2016 |
| Printed | Page 120 Caption for figure 8-4 |
In the caption for Figure 8-4 on page 120, the word “specified” contains a typo (specifed). |
roger stewart | Sep 30, 2016 |
| Printed | Page 135 Figure 9-5 |
The caption refers to the subject of the photo as a sign, but it is an eyeglass frame. |
Steve M. Potter | Sep 11, 2016 |