Once installed the tiebar looks very neat, and the arrangements under the baseboard are equally straightforward. In his demonstration model shown here Jim deliberately left the through-baseboard pivot exposed so it can be seen, but on a layout this would be hidden by a ballasted slip of paper with a slit for the wires, which then look very much like a prototype tiebar.
Jim also described his memory wire point actuators, which have the advantage of silent operation compared to solenoids or servos. The February 2013 magazine gives further details.
Switch rails and crossing point and splice rails are filed up from bullhead rail using a Geoff Jones hinge jig. Jim described how he made the 0.030" brass profile plates in the August 2012 magazine. The hinge is steel. He showed us the jig.
Jim's original ballast recipe was 1:1:3 Cascamite:Plaster-of-Paris:fine sand, with poster paint added for colouring. There was some doubt whether Cascamite (a powdered-resin wood glue) is still available, but a quick check on trhe Internet shows several sources online. More recently Jim has used crushed cat litter. If this is done carefully, the cat can be straightened out and re-used.
At that point we paused for a feed. Bacon rolls, cake, tea and coffee were consumed, then it was back to work. Andy was fiddling with wagons on his test track while Jim progressed with the second footbridge for the Grampian area group's Dunallander layout - he received the bridge columns at the Perth show from Roy Bremner, fresh from his lathe. Turning the thin columns required a bit of experimentation but ultimately Roy got the knack of it.
Alisdair was working on adjusting the Electra couplings on his stock for consistent operation, so had brought along his portable test-track/cameo Aye for that purpose. The two parts bolt together for transit: