Well, now I know. Nothing smaller than about 50 gridspaces (tops of ascenders to bottom of descenders)is fine enough to cope with eccentric character-widths.

Doh, dyslexic twit. Spelling mistrakes in the sampler again.

Thanks for the tip, 'nippa. Not long ago I discovered that caps look better (more in proportion) if I extend the radius of the curves by a few bricks each side. Such an obvious thing, but it took me a long time to discover what should have been plain. The same with spacing. From now on I can do as you suggest as a default position for cap placement and tighten individual glyphs as need be. I've been working toward this for a while, I know -- I just hadn't thought of it.

I think perhaps the reason a lot of my designs look a little chaotic is because I've just "done" rather than applied a scheme. That's all very well, as far as it goes, but I understand more and more (particularly as a result of thalamic's challenge to me) the need for an underpinning process.

It was a revelation to discover how much better Infrastruct looked after I'd weeded out most of my usual habits. Maybe I can improve even further.