Hardwood Floors April/May 2024

THE USUAL SUSPECTS: SAND JOB COMPLEXION ISSUES BIG MACHINE Once we have determined that a chatter complaint is a matter of sand job complexion, the big machine performance becomes a major consideration for its cause. Repeating marks in the scratch pattern almost invariably means there are vibrations occurring while sanding. Sometimes these are felt and/or heard by the operator, and sometimes they are not. With the “Run of the Machine,” we mean the big machine’s motor and motor-driven moving parts. To see these in action, ready the machine just as you would begin sanding, turn it on, and step away. Everything that is moving, or better yet spinning, is the Run of the Machine. Virtually all of the involved parts are subject to wear and face replacement once its service life is over.

Understanding the concepts of sand job topography and sand job complexion as separate criteria proves to be key in navigating the causes and cures of bad results. Once this approach is applied to a complaint of chatter, it doesn’t take long to realize that problems left behind from big machine use easily can fall into either category.

Distributors: Connect with Austwood at the NWFA Expo!

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Austwood Australia Pty Ltd www.hardwoods.com.au email: mick@austwood.com

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