Re: convert drawing to cad file

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Robert Campbell" <bob@c...>
wrote:

> Now I am using Rhino with scanned images. In Rhino you manually

trace the

> drawing and clean it up as you go. This seems to be a good way to

go.

>

This is also available in all Vector Cad and Cam versions.

I wrote a white paper describing the technique that was distributed
with the Vector 6.5 update in 1997.

It involves using point construction techniques to create lines
between 2 points sketched on a straight edge. 3 points to create an
arc around circular details, and cubic splines or nurbs curves to fit
curves to irregular shaped contours. After the geometry primitives
are defined, they can be trimmed/extended/rubberbanded as needed to
make a precision vector drawing.

One of our customers regularly makes replacement gun parts from
desktop scans that he claims a tracing accuracy within .003 in. of
true position.

Vector can place the scanned bitmap at a specified Z depth and the
points and other geometry, then appear to be in front, and hence
always visible with respect to the bitmap image. With Vector's ole
capability, it is possible to paste images from the clipboard, or
insert any other registered ole object and treat it as is if were a
bitmap.

Best Regards, Fred Smith- IMService

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