Hardness Testers

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David Lammas' Vickers Machine

(Bibliography only.)

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Rogers' Rockwell Machine

Ray Rogers, a knifemaker, has designed a Rockwell hardness testing machine that can be fabricated with weldments. He describes it on his website at: http://www.rayrogers.com/rhc.htm

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Mountain Molds' Brinell Press Adaptation

Mountain Molds, a bullet mold making firm, has adapted a press to do Brinell hardness testing of lead alloys. http://mountainmolds.com/bhn.htm

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Scleroscope ( Popular Mechanics)

Anon. "Shop-Made Hardness Tester for Metalworkers." Popular Mechanics. Vol. 153, No. 2 (February, 1980): 80-81, 84. Describes the construction of a scleroscope (that is, bouncing ball type) hardness tester for measuring on Brinell and Rockwell scales.

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Hinshaw. Automatic Punch Adaptation

Hinshaw, Lou. "Making a Quickie Hardness Tester." Projects in Metal. Vol. 2, No. 2 (April 1989): 21. Reprinted in Metalworking: The Best of Projects in Metal. Book 1 (1988-1989). (Traverse City, MI: Projects in Metal (a division of The Village Press), 1992): 194-195.

This article describes the adaptation of a spring-loaded centerpunch for use as a Brinell hardness tester.

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[Brinell's Apparatus shown in Popular Mechanics]

Anon. "Machine for Testing Hardness." Popular Mechanics. Vol. 8, No. 12 (December, 1906): 1240. Viewable online via Google Books. This shows Brinell's machine, although it does not identify him by name.

This article, which appeared in the "Shop Notes" column of the magazine, was collected in the book Popular Mechanics Shop Notes. Vol. 3, for 1907. It appears on p. 592. (Confusingly, the Google Books digitization of the NY Public Library copy of this book, which is available freely online, is of a bound collection of Volume 1 (1905) through Volume 3. The whole digitization is identified as Vol. 1. The version presented here has been extracted from this version; it is in the public domain.

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[Rockwell Apparatus shown in Popular Mechanics]

Anon. "Hardness-Testing Machine Gives Dial Readings." Popular Mechanics. Vol. 35, No. 4 (1921-04): 544. This would appear to be a very early Rockwell machine. The article may be viewed online via Google Books (but while 1921 is in the public domain in the US, it may not be downloaded).

Other Bibliography:

Amos. "Measuring Hardness." Model Engineer's Workshop. Issue 80 (Feb/Mar 2002): 47.

Cane. "Metal Hardness Tester." Model Engineer's Workshop. Issue 84 (Aug/Sept 2002): 54. ("Scribe a Line" column)

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