Thanks James something there will keep me going a while longer! :) I've wandered through those.. couldn't find 25 supported rail tho.

I've been on a web site (in the llast 12 months and my history doesn't go back that far) and my recollection was that there were all the CNC bits you could shake a finely crafted 4 axis stick at! I pulled down a few bits, and still have them just not the right ones for this buid. Searched google for the file names I do have without any joy either...

I thought is was one of the 8020 alloy extrusion sites, but doesn't look like it.