G'day Jason - thanks for the CF info. A supplier in Sydney wanted over double that for similar tube. I am also about to buy a small hobby mill (probably a Sieg X3). For a long time I survived on access to a friends mill and lathes in Sydney. Now I live in Newcastle. FYI - I used the ATM site links to source cheap Al-discs from S&S Machine (USA) - they have a variety of Mic6 Al-cast plate disc offcuts for sale. I used their 5/8" discs for milling of the secondary 16" rings. I am using other disc stock for the primary cell assembly. My current design uses a reinforced marine ply box at the rear end to carry the Al primary cell/rear plate assembly and the truss assembly. I think I will be milling similar truss tube connectors to yours. I note that RCOS appear to use honeycomb-CNC milled Aluminium for the rear mirror assembly behind their truss assemblies - do you know if RCOS does use aluminum for these parts, out of interest?? thanks, Guy
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