Thanks guys. I've had the calipers on both sets of tube and this explains it:
Mayhem glass: 11.92mm +/- 0.02mm
E22: 12.30mm +/- 0.10mm
Worth noting that the ID on the Mayhem is 7.4mm so thicker walled and narrower gauge...not that it probably makes much difference to temps at the end.
So the E22 is definitely tighter. With some heavy chamfering I have got it to go into a fitting but now it's passed the o-ring I don't think it's ever going to come out - and I mean by intention rather than accidentally. I'm also concerned about the amount of insertion force required for when I'd be connecting to things like a graphics card.
David: If you happen to be talking to E22, would you mind asking them what the nominal diameter and tolerance should be? Just wondering if it's maybe a metric/imperial thing, a bad batch or by design. Cheers.
Also, with the two of you on the EK HDCs that explains why there was a stock shortage!
Mayhem glass: 11.92mm +/- 0.02mm
E22: 12.30mm +/- 0.10mm
Worth noting that the ID on the Mayhem is 7.4mm so thicker walled and narrower gauge...not that it probably makes much difference to temps at the end.
So the E22 is definitely tighter. With some heavy chamfering I have got it to go into a fitting but now it's passed the o-ring I don't think it's ever going to come out - and I mean by intention rather than accidentally. I'm also concerned about the amount of insertion force required for when I'd be connecting to things like a graphics card.
David: If you happen to be talking to E22, would you mind asking them what the nominal diameter and tolerance should be? Just wondering if it's maybe a metric/imperial thing, a bad batch or by design. Cheers.
Also, with the two of you on the EK HDCs that explains why there was a stock shortage!





) OCUK were also very responsive and helpful. The two are currently weeding out the problem tubes so stock should be good very soon.
Looks like M4x0.7 for these then and the shortest I can find are 4mm long...which is a little overkill for two 0.7mm sheets. I've ordered some screws so next is to find out whether the metal is deep enough to take a thread 





