Great work and a beautiful result Andy. Getting that silver doped look can be a real challenge, much more difficult than a NMF.
I've been looking around for some time for those 'Strutz' packs, in the various sizes, but I believe the company is no more.
Not a major problem, as I only needed some for one set of interplane struts, so I'll make some from scratch. There used to be another UK company making a similar product, but I'm blowed if I can remember who!