... give a nice flat surface to solder the switch blade to. The copper timber thickness is a little too thick as the ply timbers are only 0.8mm thick, so I cut away the Templot plan to allow the copper to sit a little lower and this seems to work. Any variance can be taken up by adjusting the bolt up or down. I'm aware that this approach is a bit crude, but it seems to work and is less likely to fail electrically or mechanically I feel, than say springy wire. 2787_051729_420000000.jpg 2787_051731_550000000.jpg 2787_051734_200000000.jpg After the stage shown in the photo above i drill right through the baseboard to allow the bolts to protrude out at the bottom underneath the baseboard. And I gap the copper clad twice to be on the safe side, top and bottom. 2787_051733_000000000.jpg The other end of the bolts are used to provide the track power to the blades. The resulting blades have virtually no sideways resistance which makes them an easy drive for the servo. The next thing on my list is to produce 7 V's That's it for tonight Kind regards ...