Hello:
I have been holding out on this for some time, but have finally decided to invest in an accurate top quality straight edge. I am considering the Starrett 48″ with no bevel or graduation. I intend to use this for checking table saw extensions (wings and extension table), jointer table, any other machine that needs to be periodically checked for flatness, and the numerous times I wish I had an accurate, long straight edge for items such as for checking table tops, glue ups, etc. The closest thing I have now to a portable straight edge is a Starrett 24″ rule. Does the Starrett 48″ sound like the way to go?
Replies
If you've got the money, you won't be disappointed with the Starrett straight edge. You can also purchase an aluminum straightedge from Lee Valley, for under $60.00, that is guaranteed to be accurate to .003" over its 50 inch length.
For machine checking and set up, a machinist's quality straightedge is almost a necessity, but I would never use one for day to day furniture work. They are too expensive, too easily damaged, and a steel one is very heavy and sharp edged, it would be hard to use a steel straight edge without dinging up whatever wood you placed it on.
Also, steel and aluminum straight edges have a perverse ability to topple over the second you take your eyes off them. If you drop your expensive straight edge, even once, from bench height, you can't ever again be sure it is perfectly straight, totally negating its value.
For furniture work I use good quality, but not especially expensive, 2 and 4 foot aluminum levels that I check for accuracy against the machinist's straightedge occasionally.
The levels are light in weight, easy to pick up securely, and will stay upright on edge without having to steady them by hand, which allows you to step back and sight along them for gaps with the edge you are checking. A pair of levels also serve as a ready made set of winding sticks.
John White
Edited 12/5/2005 6:44 pm ET by JohnWW
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