Re: Color RP Systems

Date: Thu Dec 07 1995 - 17:54:23 EET

Using multiple volumes to indicate color:

Many programs that read STL files allow concatenated STL files. Ours do.
At least some 3D Systems programs do. Each one could indicate a different
  unix cat file1.stl file2.stl >total.stl
   dos copy /b file1.stl+file2.stl total.stl

Many programs which manipultate or slice STL files allow the processing
of mulltiple STL files.

BR&A STH format supports multiple volumes and color info, among other things.

The 2 byte attribute count in STL is generally ignored, and has been
used by some CAD systems to store Layer/Level or Color info. This can
indicate Triangle Color. Volume Color could be derived by the silce software.

Intermediate colors/shades could be produced by the slice software by

Cubital systems have been used to produce colored regions by trapping
the (colored) support wax in voids.

C. Brock Rooney, Pres., Brock Rooney & Associates Inc. (Brockware)
       268 George St. Birmingham Michigan 48009 USA
(810) 645-0236 fax/bbs (810) 645-9020 email

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