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In due course I'll let people know how the cover for my regulator goes:
Looks like I would need a 4th axis to make use of that emboss feature.Think I may get a 0.5mm engraving cutter (0.020") and maybe a 0.3 to have a play with.Still waiting for Graham to confirm sizes but I can't imagine that valve being any more than 2" dia on full size so that's only going to be 1/2" dia on the 1/4 scale model which makes for some very small writing