From the Bench: Testing Your Layout Tools - Popular Woodworking Magazine

From the Bench: Testing Your Layout Tools

 In November 2004, Popular Woodworking Magazine Article Index

Is your square really square? Is your straightedge straight? Tools that have been trued make woodworking easier.
By Don McConnell
Pages: 32-36

From the November 2004 issue #144
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A couple of years ago, while demonstrating edge jointing using hand planes, the shot edge appeared to be slightly convex when I checked it with my wooden straightedge. I don’t usually have this problem, so after a couple of tries, it suddenly occurred to me that I hadn’t recently “proved” my straightedge. Somewhat to my embarrassment, a quick check revealed that the problem was with my straightedge, rather than the shot edge.

I wish I’d been clever enough at the time to pass this off as a planned “object lesson” for the observers, but I’m just not that fast on my feet. However in the end, I think it did demonstrate the desirability of proving our layout and testing tools – especially when doing critical work.

From the November 2004 issue #144
Buy this issue now

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