BJ - Only just started posting ECF today, but been reading for a few months - been reading and keeping up with this thread and haven't skipped a single post - would just like to say a huge thanks to you for all the great tips and to all the other contributors - just wonderful stuff!
Still not quite got it all down in practice, but have my 'CHID' working fairly well ATM on #500 and 32g Kanthal - need some more practice though, and have some 29g Kanthal A1 on the way as well - being an Englandian, I get the stuff from Germany quite quickly (2 days last time) and the SS mesh from the Mesh co. in half that time (G), so will have plenty to play with.
Being a science-ey type myself (as well as an incorrigible tinkerer and problem solver) I understand the issue of adhesion coming into play with the thicker top-caps, but there's something else that may be at play here that's come to mind - heat sinking!
The thicker top caps, esp. coupled with the largely brass construction of some of these RBAs *must* be pulling a fair old amount of power (as heat) from our coils, and surely that is going to reduce vapour production also, as well as delay the onset of it and of course the overall efficiency of our RBAs, not to mention slow down the wicking as that too seems to be partly heat driven in these cases? - I know my modified Smoktech carto tank based RBA wicked much faster with a 1.5-1.7mm wick (as I made it originally), than my CHID did with 3.5mm wick after I'd counter bored the top cap from below to an equivalent thickness and it seemed to me to be because the plastic tank based RBA had a lot less thermal mass to sink into?
Of course I could be totally off here and even if not, there are no doubt other factors at play, but nevertheless, I figured it worth thinking about and mentioning.
The above has also lead me to wondering about an RBA with glass or ceramic wick/mounting plate also for similar 'efficiency'/power saving reasons...
Later, and thanks once again for a most educational thread.
Be Well!
DV (There Can Be Only One... Until it is Copied... )