center punch


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center punch

[′sen·tər ‚pənch]
(design engineering)
A tool similar to a prick punch but having the point ground to an angle of about 90°; used to enlarge prick-punch marks or holes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

center punch

center punch
A hand-held punch consisting of a steel rod, one end of which has a sharp point; used to mark a point on metal, indicating where a hole is to be drilled.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
If your lines were drawn out to locate a center punch location, getting the punch right at the intersection of the lines is a matter of skill and good eyesight.
We extracted and analyzed the folates of DSS (50 [micro]L) center punches (n = 15) from each of two sera and noted reasonably consistent within-assay folate concentrations (CV <10%).
Align your screw holes perfectly with a center punch or a Vix bit (see Buyer's Guide).
Now I just placed the stock with the lower tang center punch mark on the point of the rod in the vise and positioned the point of the drill bit in the other punch mark.
4 CONDUCT A CENTER PUNCH TEST on poured concrete walls and slabs before you shoot power fasteners.
A There are a number of things you can do the more precisely to locate your center punch marks.
The dimple serves as a substitute for a center punch mark to prevent wandering when drilling into a curved surface.
The spot was marked and struck with a spring loaded automatic center punch. If you have to be very precise, always use a center punch before you drill.
power drill), use a center punch and hammer to lightly nick (don't pound hard!) the tile's hard, glazed surface.
(The top of the receiver was ground a few thousands until it was easily marked with a center punch.) The hole was started with a center drill, then deepened with the #31 drill bit.

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