ACAD PowerPole Sagging Design
Rollin Laird

POLINE.ARX is an interactive electrical power line design tool to be used with ACAD2000. It is intended to be used in profile view drawings of power pole lines. It should be loaded from within AutoCAD using the Tools, Load Applications menu items. POLELINE.ARX comes with a windows-style help file. Please consult it for an overview of usage, explanations of required input parameters, as well as a thumb-nail outline of the cable sagging process; 33408 bytes.

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Free 3D CAD with Motion Simulation
Aik-Siong Koh

'freeCAD' is a basic 3D CAD with state of the art Motion Simulation capabilities. It is suitable for anyone interested in learning 3D CAD and Motion Simulation for free before upgrading to commercial packages. Educators will find it ideal for the teaching of dynamics, machine design and physics. It is a program which is sponsor supported. Releases will be made quarterly. 'freeCAD' allows users to create and manipulate assemblies, which are collections of 3D parts. The parts are 3D solids, which can be connected by joints, constraints, contacts, actuators, springs, dampers, forces or torques. The parts and connections define the structure or mechanism that the assembly is meant to represent. This program can perform full Multibody Dynamics analysis on the assembly to predict the motion according to Newton's Laws. Animation using the simulated data produces realistic behavior of the system under study. Users can also obtain engineering data in the form of plots and tabular output. Data series available include linear and angular displacements, velocities, accelerations, forces, torques, momenta and kinetic energies. Acceleration data include transverse, centripetal and Coriollis accelerations. Users can view forces and torques from joints, constraints, actuators, springs, dampers, applied forces and inertia; 5219089 bytes.

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ACAD program breaks lines/plines for blocks
Rollin Laird

BreakBlk is an ARX routine for use with ACAD2000 or 2000i that will self-invoke to automatically break a line or pline that a COPY, MOVE or INSERT command has placed a block onto. There are no requirements for the make-up of the block, but any plines that the block lands on should be of the lightweight type. Breaking on blocks can be toggled on and off at the command line; 22292 bytes.

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Free Raster to Vector converter
Matthew J. Heaton, SoftSoft Ltd

WinTopo v1.1 is a raster-to-vector (images-to-drawing) conversion tool. Its main function is to convert linear/poly-line features in the raster images to corresponding vector drawing files. It provides both famous Zhang-Shuen and Stentiford Thinning methods as part of the preprocess for vectorization. The product is suitable for conversion of scanned topographic map/engineering drawing images, saving the output into drawing files, which can then be opened with any .dxf capable CAD program. (Five other output formats are also supported.) Vectorization is fast, and a 1-click thinning and vectorizing option is included. The software comes with complete documentation; 508635 bytes.

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Point and click CAD
Jon Hoke

JustCad v2.02 is a point and click cad program pre-set to produce a good result with little or no CAD skills. Drawing Tools: Line, 2pt. Circle, 3pt. Circle, 2pt. Arc, 3pt. Arc, Ellipse, Point, Polygon, Multiple Lines, Place Text, Ortho Dimension, Radial Dimension, Angular Dimension, Leader, Snap Point, Snap Object, Snap Midpoint, Snap Percentage, Snap Perpendicular, Snap Tangent, Snap Intersection, Blank Line, Confine to Angle, Associates (Pre-drawn collections of objects), Print fitted view or 90. Editing Tools: Object Select, Window Select (with filtering by layer, object type, line width, line type), Break, Trim, Copy, Stretch, Mirror, Radial Copy, Rotate, Move, Scale, Erase, Change; 825340 bytes.

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