Sorry not had a chance to do a how to but been doing some testing on the new 16mm stems, For scale there is a normal tm2 stem in the pic.
All pair very well with the 18mm j-hook with an o-ring. You can use them as an outer liner tube for smaller diameter tubes as well like with the inner...
I'll try to put up a few pics as a how to later this weekend but essentially the thermocouples come with an outer glass braid covering - inside that are the 2 wires again each one is inside a glass braid. With the outer braid cover they are just to thick to fit between the outer and inner...
I have been gifted some custom stems all work so well with the thin walled heater - better than the 12mm stems i had been using as the distance between the inner liner and stem is much closer.
They already need a proper clean - all are different and some work better with just a bud but others...
Been playing with more stems and different arrangements - at the moment enjoying some very free flowing more convention sessions without the inner liner but using the tm2 18mm water adaptor paired with an 18mm j-hook
Some more radical stem ideas on the way soon - hopefully in the next few...
I have found a new way to use it - a tiny might2 long stem - so its open at the bottom
Heat it up to about 200 and let the tm2 stem get a nice heat soak.
The 12mm stems just fit into the tm2 stem with almost no gap - so you get a massive long heater - basically twice the length of the outer...
I have been working something akin to a bakx/electronic vaponic
https://fuckcombustion.com/threads/bakx-heating-principle-inspired-desktop-vape.54964/
https://fuckcombustion.com/threads/unregulated-simple-all-glass-vape.56136/
I dont have that many pics of every design layout i tried - most pics are on the 2 threads - i do have a draw full of previous versions as it has developed with different nichrome thickness, lengths and various tubes...
I was worried about the intake airhole when i first started messing about with test tubes and glass straws but found you just adjust how much you pack/tamp the inner straw affects airflow far more than any intake hole.
Also if your straw touches the bottom of your outer tube you can also adjust...
I have put together some ideas and figures for a DIY kit
List of what it would include:
RP2040 PCB + firmware installed
Screen
Rotary dial
Mosfet unit
Thermocouple lead with ptfe + kapton tape protection
Heater:
Outer quartz tube + nichrome coil
Inner quartz 1mm thick wall tube
Inner...
Well im still messing with it - it worked really well with 3 lipos but they got hot fast so stopped that experiment after the first try but the coil got really bright and the rod had a glow to it but even with the butane torch i find maybe 2 hits before a reheat.
The video is from the 120w...
I got one of those sherlock pipes for hash/oil - they are quite cool - i like to use it for reclaim as well
Anyhows i ran out of butane but had a thought of how to heat up the quartz rod without a torch and use one of the little pwm modules i made - fortunately it has a decent mosfet unit in it...
So i have checked and all ok asking.
Would people be interested in a kit form of this like the vapoven diy kit?
Not sure on costing just yet as i need to know numbers before i can actually work out like getting 10 outer tubes/pcbs or 100 will be a big difference. It would include a variety of...
I think i have mostly fixed that bug with the hardware adc error and have coded around it.
A bit annoyed with myself as i dropped the heater/tube part and the lip hit the lid of a glass jar - the quarts was not as forgiving as the glass and a chip has been taken out of the top - it is still...
Well im confused - im testing with the 4 lipo battery setup and max watts at 90w - 3 or 4 lipos is pretty sweet for on demand - with 4 the batteries just get a bit warm after a while and lasts for ages between recharges.
With 3 lipos - they do get a bit warm with back to back session not fully...