An undesirable pattern created on the surface of a workpiece, usually at regularly spaced intervals, caused by an out-of-round or out-of-balance condition. Chatter marks are not a structural defect, but they cannot be corrected or eliminated once they are in the material; the marks will usually show through any paint that is applied.
The Fabricator Blog
Scholarship fund to honor Dick Kallage - by Tim Heston FMA’s Nuts, Bolts, & Thingamajigs foundation has set up a memorial scholarship fund in honor of Dick Kallage, an influential member of FMA and columnist for The FABRICATOR magazine. Kallage died of cancer Feb. 18.
The only North American publication devoted to the metal tube and pipe industry industry and is a trusted source of information for professionals. Subscriptions are free to qualified tube and pipe professionals in North America.
TheFabricator.com provides metal fabrication professionals with market news, the industry's best articles, product news, and conference information from the Fabricators & Manufacturers Association, Intl.