Re: can you scale a part using Dolphin CAD/CAM

Smoke,
I am not suggesting that 'scaling' is not useful, on the contrary it
can be very useful when producing parts of a CAD drawing.
What I should have stated is, that I would not scale a (whole) CAD
drawing, a CAD drawing should always be at 1:1 scale.
I was contacted recently by one of my customers who had just machined
a part that had come out oversize, when we looked closer at the CAD
drawing that had been supplied by his customer, turns out it was at a
scale of 1:2, apparantly this had been done to make it easier to
print. I corrected it for him, using Dolphin, by applying a scale of
1:0.5 to the whole drawing.
Don't forget, if you scale a CAD drawing, the 'dimensions' remain the
same. The draughtsman is probably not aware that his CAD drawing is
going to be used 'directly' for manufacturing.
The first thing I ALWAYS do when I receive a customers CAD drawing is
to check at least one dimension on the drawing, to confirm the scale
is correct.

Dave Pearson

--- In CAD_CAM_EDM_DRO@y..., "Smoke" <smoke@t...> wrote:
> And just what's wrong with scaling a CAD drawing? I do this
routinely and
> it works just fine!
> In fact, it is necessary, since I need to increase the scale by
103% to
> allow for wax shrinkage and metal shrinkage during the casting
process.
>
> Smoke
>
> > I personally would use the second option because a CAD drawing
should
> > never be scaled!
> >
> > HTH
> >
> > Dave Pearson