On Mon, 13 Sep 2004 10:22:44 -0700, "Daven Thrice" wrote:

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||"Richard J Kinch" wrote
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||
|| Straightedge and carbide scriber for the lines. ($20)
||
||OK, I'm working with 1" extrusions, that are 90 deg. angles. I want to mark
||a hole that is 1/4" in from one edge. The only "straight edge" I can think
||of using is a metal ruler, which is an 1" wide (or so). I'm wondering how to
||clamp the ruler to the work piece good enough for me to be able to drag that
||scribe along the straight edge without the straight edge shifting.

Just use that, or the dial-caliper-as scribe method

||I have one of those laser straight line things that you use for a level.

The metal rule is at least as accurate and a lot less trouble.
Texas Parts Guy