Replicating them is relatively easy, but quite tedious. You would need a decent drill press, and the correct diameter forstner bit. After that, it is just layout and then repetition. I suspect there might be the opportunity to make a jig to assist the process.
The difficult part, would be finding the afromosia, I suspect. 6-8' lengths of 4/4 to 5/4 Afromosia (I cant remember the thickness off hand), probably run you the same cost as just buying the finished wall standards second hand, not to mention the time saved. A slightly different story if you have the oak or walnut versions, as the material is far, far less of a cost, ... then it mostly comes down to time.
If I could find a cheap source of Afromosia, then it might be worth designing a jig for this as a side source of income. I could get a 'made in denmark' embosser, and I would be in business.
I think it was rockland, formerly active here, that documented his making of reproduction Cado rails years ago complete with photos of his jig for accurately boring holes. I tried a quick search of the archive but came up short. Maybe someone else wants to try harder? IIRC, he used either walnut or mahogany with a stain or dye to get close to color match.
"People buy a chair, and they don't really care who designed it." (Arne Jacobsen)
Too bad the jig images are no longer there.
I suppose you could join smaller pieces of afromosia, but it would not be true to the original (I am, typically, a bit of stickler for that).
I do have a little over 100 lbf of teak, so if I am willing to go past being 100% correct, I would probably just use teak.
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