There is no standard mesh sadly, I bought a couple of earbuds just because they had 15.4mm steel mesh cover and many of those were more like 15mm, very loose for real 15.4mm cover and would need a ton of glue. The N50 red rim has the best steel mesh cover from what I tried, it's compatible with everything and almost as thin as the DP100 cover. Most speakers use different kind of steel mesh that is either very loose or too tight for most diy shells
Yes I plan to try that cheap jcally, only the low quality shiny plastic puts me off for now
Btw anyone tried or ordered these drivers? The only one I could find now with the thin DP100 cover. I guess this is more like a classic midcentric type speaker, but the fit would be great with dp100 and bigger shells. There was a variant of N52 driver also with dp100 cover (which I use with mx760 shell) but it disappeared from NSC and it's only available for ridiculous prices.
https://www.aliexpress.com/item/4000898923123.html