Wood Magazine 204 by Bill Krier

Author:Bill Krier
Language: eng
Format: epub
Tags: Wood, Home and hobby woodworker
Publisher: Meredith Corporation
Published: 2011-03-25T04:00:00+00:00

Steel guide blocks sit a few thousandths of an inch from the blade. The thrust bearing snugs up behind the blade the same distance; the blade runs against the thrust bearing's face.

Back bearing

ront bearing

With bearing guides, the front bearings ride just behind the blade gullets. (Back bearings support only blades W or wider.) The blade edge runs against the thrust bearing's rim.

Four points of ceramic side contact prevent blade twisting better than bearings. Rather than a thrust bearing, this guide uses a ceramic insert.

■ Quality blade guides. A bandsaw with great power and cut capacities but lackluster blade guides is like a Mercedes without power steering. Adjustable blade guides mounted above and below the table prevent the blade from twisting or wandering side-to-side during cuts, greatly enhancing accuracy. The best guides prove easy to set and adjust,

because you'll do this every time you change from one blade width to another. The tested saws feature three types of guides, shown above: steel blocks, ball bearings, and ceramic contacts. All held blades true enough in our curve-cutting and resawing tests, but we like the ceramic guides best because they completely eliminated blade twisting.

(Although it wasn't a big problem, the other guides allowed slight blade twisting when we cut circles less than 1" in diameter.) The Laguna guides contact the blade at four points on each of the upper and lower guides, twice as many contact points as the other saws. The steel blocks created more friction—and potential blade-damaging heat.

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