is a manufacturing statement out there that explains what "edge" means....to me it means to smooth out edges unless chamfer with dimensions are noted...
thank you...rube

When a draftsman shows a square edge or corner on a blueprint, he/she expects it to be sharp, clean, and square. Otherwise, he/she would have put a note on the blueprint to "break all edges" (meaning to file, grind, or emery belt a slight chamfer on an otherwise very sharp corner) or he/she would have provided for radii or definite bevels by means of notes and dimensions on the print.

A burr is formed when metal is crowded or pushed out over the normal edge in the form of an overhanging lip, frequently razor sharp, by a cutting tool or grinding wheel. In which case, when the draftsman puts a note to "deburr all edges" it means, he/she wants that overhanging lip removed.

is a manufacturing statement out there that explains what "edge" means....to me it means to smooth out edges unless chamfer with dimensions are noted...
thank you...rube
Welcome to the Cove, Rube. While "edge" is sometimes used as a verb (as in "edge the lawn"), I've never seen it used as one in the context of manufacturing. You can "break" a sharp edge, but I've never seen "edge" used as a verb on a drawing. Best not to guess if you're not sure--ask the customer, or whomever put it on the print.

If you could give us a little information to put the term into context. We do "edge" product. We typically provide a mill edge product, but can provide a higher surface quality edge by cutting, either a sheared or burnt cut. This is also referred to as edging. But, as you can tell by the answers so far, each industry or product has a different language use.

I do thank you..very much...and look forward to enjoying this site...thanks again...rube...

so a milled edge would be "burr free"...within commercial tolerance?...thank you for responding..rube..

I do thank you...much has been clarified with your response...thank you again...rube..

Just remember that there is a difference between a milled edge, one that has been milled; and a mill edge, one that comes straight from the production equipment with no other surfacing. Again, it depends upon the industry.

I was always taught that this means to remove all burrs and sharp edges

I was always taught that this means to remove all burrs and sharp edges

Me too, although to 'edge' is something I did to my lawn, as Jim W suggests.

I've seen 'break edges', 'remove all burrs and sharp edges' as notes on drawings, where the intent was just that. Normally chamfers are used to provide clearance on mating parts, leads on threads and as a feature for aesthetics etc. Anything else is simply to remove a dangerous sharpness for safety reasons.

Just as a side note, for those interested - there is a close relative of a burr called a fillet. In this case, the square sharp edge of a cutting tool or wheel becomes rounded off (or the machinist begins to withdraw the tool just at the corner). When this happens, it leaves a tiny bead of unwanted metal in the corner.

Fillets are just as an undesirable attribute as a burr. (See attachment.)

Most of the drawings I get, from India as well from abroad, carry the instruction - 'Remove sharp edges and burrs','Deburr the edges', 'Free from sharp edges & burrs' etcetra. Despite using different terms, the meaning is obviously the same.

Umang :cool: