OF
Well-Known Member
Nice shape to the contact on the bottom; semicircular rather than flat. For better contact to the upper sliding switch, no doubt. Still doesn't look like a 501 thread. Can't tell what the material from this drawing. If it's metal, rather than ceramic, then maybe the core/bowl itself comes in either metal or ceramic. (Never considered that!). And note how much thicker the walls are in this drawing. More to think about.
And the set screws are hex bolts, not spline or torx (or, thank heaven, phillips or slotted).
Maybe we're all overthinking this, you know. Vape junkies in search of a better equipment fix...
Yeah, but....
The contact shape, possible mating with the maybe switch below directly and thread being different are 'old news' (we saw that before). The real part in the photo is obviously ceramic and the bowl wall is definitely thinner (and seems tapered) relative to the drawing (which has the 3rd ring Tim said was added). My guess is 'it's just a drawing' explains the bowl shape?
I assume you meant to say 'hex head set screws', not hex bolts? I sure don't see a head there unless it's some really bitty socket head cap screw in which case calling them a 'setscrew' is a misnomer?
The bigger issue, I think, is 'threaded into what?'. Ceramics don't thread well. My guess is the setscrews go through snug holes into the threaded metal piece that makes up the threaded plug part of the connector and probably supports the heater assembly itself inside the ceramic bowl section (rather than being pressed together like the current one). This would take care of the thermal issue as the metal parts expand faster and more than the ceramic ones.
That is I don't think they're setscrews per se, they don't bear on anything with their tips to prevent motion there. What the Brits would call 'grub screws'. They're really more like threaded pins? I'm guessing the core 'floats' inside the bowl a bit on them.
I don't think we're overthinking this as much as not yet fully appreciating the subtle genius of the design?
Fun stuff indeed.
OF