Hooke joint and CV joint

A basic universal joint (Hooke joint) allows a rotating shaft to flex, but the output speed is not constant. This can cause vibration and premature failure.
Adding a second Hooke joint can cancel out the effect, creating a Constant Velocity joint. James modelled these joints with BricsCAD Platinum. Again, we had a small lisp program to rotate the shaft, flex the armature and render the model at each position.

Australia Parabuild Library

We've made a library of Australian ("BHP") Steel Profiles and ASI Standard Connections macros. The library comes as an installer, which puts the different profile and macro files into the correct Parabuild folders.

We'll update this library from time to time, so check back here for the latest version.

When installing the library, choose the main Parabuild folder.
(By default this is on the C drive called Parabuild)

AJUST_A_BAR modelled with BricsCAD

AJUST-A-BAR tills the soil, to an adjustable depth or 'aggression'. Most broadacre tillage implements have a fixed depth of cut. Ajustabar can lightly cut stubble or aggressively cut weeds by adjusting the angle of the support arms. The folding mechanism also makes it easy to tow through gates and on roads.

Martin Contracting Pty Ltd in Bungowannah, New South Wales developed the Ajust-a-bar implement. Sarah Boyd modelled the mechanism and created production parts drawings using BricsCAD Platinum. See http://ajustabar.com.au/

GullyCraft Whirlygig

Sofoco bought a wooden toy whirligig from Robin Mills of GullyCraft in Maiden Gully, Bendigo - a gift.

The whirligig shows Robin's grandpa endlessly cranking his old Ferguson tractor. All the wooden parts are beautifully made and painted, glued and screwed with stainless screws and running on sealed ball bearings.