ACIS Import - Metric?

[cascadtx]

I wrote an ACIS file containing several 3DSolids
out of AutoCAD 2004. When I open it in IV6, it
comes in metric no matter what settings I have
(at least none I've tried changing makes any
difference). What's going on?

[davidduncan]

I had this same one yesterday or the day before. The dudes here were saying that I must have brought it in with the metric button lit. But like you I have checked that it wasn't. the only difference was mine was a Acad 2002 file, flat pattern. Probably just another one of those Inventor idiosyncracies.

[Anonymous]

This get's confusing for a simple guy like myself, but I think the acad file
that was written out had units set as mm or mm was used as an export option.

Anyway, open the .sat in Notepad and look at the third line. It should like:

1 9.9999999999999995e-007 1e-010

if it's written out as mm's.

The first field is the unit scale factor, so

1 = mm,
25.3999... = inch,
-1 = unitless,
etc.

(ACIS is unitless, but uses a default of mm to avoid confusion, therefore
scale factor 1 = mm.)

If this is the case, change the first field to "-1". This tells the reading
system that the model in "unitless" and you should be able to spec the units
when opening the file. If that doesn't do it holler back and we'll try again.
8~)

=============================

"cascadtx" wrote in message
news:f16119d.-1@WebX.maYIadrTaRb...
I wrote an ACIS file containing several 3DSolids
out of AutoCAD 2004. When I open it in IV6, it
comes in metric no matter what settings I have
(at least none I've tried changing makes any
difference). What's going on?