SHEET LIGHTNING - 3D CAD Sheet Metal Unfold Program

1. Sheet Lightning is a specialised, standalone, 2D/3D CAD System for
   creating and unfolding sheet metal designs for fabrication or
   manufacture. It handles everything from simple cylinders, cones,
   rectangular ducts and ovals, to adapters, adapting any of these
   section types, interections between any of these types and
   multi-intersections of any of these types. This enables it to handle
   breeches, lobster-back/segmented bends and very unusual or complex
   one-off designs. All pieces can have centre line offset and oblique
   or skewed sections. Simple designs are handled with ease through a
   second 'parametric' environment that requires only the typing of key
   dimension values to modify the design. A library of standard designs
   is included. Futhermore all designs created using the full 3D system
   can be automatically analysed and converted to a parameteric form,
   then saved as extensions to the existing library. The software
   integrates to general CAD systems via DXF files, exporting both 2D
   patterns and 3D models. The product has been proven in the worldwide
   software market since 1990, offering truly unique design capability.
   It includes a comprehesive 214 page HTML manual. 

2. You will need WINZIP, PKZIP or some other unzipping program to open
   the ZIP file. Use the SETUP.EXE file to install Sheet Lightning in
   Windows. This can be done directly from WINZIP. Once installed Sheet
   Lightning is accessed through the options on your start menu. The
   computer requirements are 386DX PC or better, 2MB Ram, 13MB of disk
   space and any Windows system.

3. The program is SHAREWARE. It is the full working program, with some
   of its functionality disabled until you type in your registration key
   code on program start-up. Without the key code the unregistered
   program can still create and output a wide range of commonly used
   designs and output unfolded patterns or 3D models providing the
   complexity of your design does not include the following: 
       
          (a) The design has no more than 2 pieces. 
          (b) There is no oblique (i.e. skew) on any piece. 

   You can therefore use the program to form any single or two piece
   cylinder, cone, rectangular, rectangular adapter, square-to-round
   adapter, oval, oval-to-round/rectangle adapter etc. Intersections can
   be formed between any two of these pieces with or without centre line
   offsets. The unregistered copy can still be used to create the more
   complex designs internally, but the output of these designs is
   restricted until you supply the key code. However the unregistered
   program license restricts it use to non-commercial and non-profit
   making purposes.

   You can obtain your registration code through the internet URL:
   http://www.revcad.com/SheetLightning/register.htm. The start-up
   program includes URL links to automatically invoke your default
   internet browser and load the registration page.
 
4. You can freely distribute the original zip file providing you do not
   alter the executable files in any way and YOU MUST NOT repackage the
   software or charge any fee, other than a nominal distibution cost,
   without the express written consent of RevCAD Software.

5. In the event that you have questions or problems you can contact the
   program authors at RevCAD Software on the following email address:
   info@revcad.com.

6. The authors hope you find Sheet Lightning an exciting and productive
   experience.
