Progress....
Sorry about the focus. The original try was fine but I found after a day or so of use the original 14mm SS heater sleeve got stuck in the wood, and in use the wood was gripping a bit to much on the stem ferrule. A night out in the shed and the 14mm sleeve loosened of and the ferrule was back to where I began, a nice fit.
The way it went together I had to fit the 510 then drop the wood and sleeve over it, a sloppy fit and a PITA. The three O rings don't offer enough grip in the sleeve when it's like this.
I drilled and tapped the SS at 3.5mm, I have a box full of these screws and a tap. The wood has a countersunk hole in it and the 510 has a flat filed on it.
The wood has three grooves to allow air in and I put three grooves in the base as well. These match the holes
@Pipes put in the 14mm tube. Also put a recess in to hide the 510.
It all lines up and the 510 sits in the recess and the screw bottoms on the flat spot.
I can now fit the wood and heater in one, and I can do this with it and it's not going anywhere.
Before it held okay without the batteries in but when fitted the O rings didn't hold on and it would slowly slide apart.
Still getting some good results, it's given my green a speedy effect rather than the spinal melting I get from my VC. I've been mischievous all week.
Hotspots and stirring, I've put the extra bowl screen on top of the load which has helped a little.
The SS is heat soaking but not enough to make the wood uncomfortable to hold.
I push the button and draw, then keep drawing after I let off. The soaked SS holds a bit of heat.
Got a couple of bits to work out so the stem fits better,
@Ruta will be round this week for a bit of testing while I get some more stems done.
So far I've learnt that I need to learn more about the RX settings, I need to practice making coils and I now know not to touch the coil after it's been fired up.