euqal lentgh\radius versus linked dimension

sorry for the dumb question but....can somebody explain me why should one
prefer the linked dimension (dimension constraint) instead the equal
lenght\radius constraint or vice versa in SW sketches?

 

linking is for relating dimensions across different sketches, features.
equal length works in the same sketch.

stephen

 

Also, if you have say 8-10 dimensions that you always want to be the same,
it would take 8-10 equations to achieve the same thing as simply linking
them.

One way they could be utilized is for like adding general fillets or
chamfers to a part. It may take multiple features to put all of the
fillets/chamfers on the part, but you want them to always be the same. If
you link them, any change to any one of the features will update all of the
fillet/chamfer features.

 

If you need to control the length of an arc to equal the length of a
straight line, linking works great. (I did this to develop points for
an involute once.)

Also works for controlling other dissimilar parameters, i.e. bend radii
and thickness; extrusion length and sketch entity dimension.

 

Thanks, i think you made an important point that i totaly missed!

 

thanks guy's.
your arguments about the visibilety of dimesions versus relations, is a good
one, although i think that "That70sTick" has the most convincing of all.