"Break sharp edges" note 4

[mathlete7]

Hello,
I have a pretty simple question - I know that its common to call out "break sharp edges" on machined parts. I'm curious, what tool do they generally use to do this?

Or for instance, on a machined aluminum I-beam, what would be the most common way to remove the sharp edges from the flanges? Would you generally just machine a chamfer along the length of the flange? Or would you just run some tool along the length of the flange to break the sharp edge?

Thanks much...

 

[berkshire]

I can assure you of one thing, if you do not put that note on, or have it in the border of your drawing, a large number of contracting companies will leave the edges like razor blades.
Guess how I know?
B.E.

 

[KENAT]

I'm guessing because you serve the same role at your current employer that I did at my last one.

Human sharp edge detector.

Looks great when you're doing a fit check with the customer etc around and you slice your finger open on the part.

KENAT,

Have you reminded yourself of faq731-376 recently, or taken a look at posting policies:

http://eng-tips.com/market.cfm?

What is Engineering anyway: faq1088-1484

 

[berkshire]

Kenat,
Youuuu got it.
B.E.

 

[plasgears]

You need to spell out on the drawing what you want. In GE's mfg training school they trained compliance with the drawing. When a craftsman with a finer bent provided more than the dwg reqd, the supervisor would roughen the work with a file to meet the drawing. A specified 125 finish should be provided with the appropriate process. A 32 finish is not reqd and wasteful of time and process.