Hi Gary,
Haven't had the time to try Argo Navis out yet, getting home around mid night of late and thats a bit too late to start mucking about, but next month I hope...I have set the hand set up
The plan has come together.... and it works nicely. It should work with a bit of grease in between the plates plus the weight of scopes etc on top.
The photos are self explantary. The last is out of focus but you get the idea of the thread movment in the cylinder block.
Now to give it the Steampunk look