My experiences with using only co2, the weld seam seems to not “flow” like well, it becomes a little higher, and get more of a greyish slag cover, but its totally acceptable, it can be compensatet with just a little more amps.
Doing the other way around, using pure argon for ordinary mig, plain steel/iron, gives much worse welds, like a grey worm twists on the steel 
Edit: i dont saying pure co2 is bad, no no, it works perfectly 
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chaining air compressors would be easier.
Making Dry Ice From Fermented Honey! - YouTube
In this case he is making honey mead as his source of CO2 but anything that ferments would work. You can also use a few other things to get a purer CO2 stream including membranes. But it is really carbon capture and storage.
There has been a lot of work for ‘cheap’ ways to extract CO2 from the air. At .04%, it is pretty spaced out. You have to cool to -79C to get solid CO2.
I think they have to get the nitrogen out of those air tanks. or else they can get something similar to the bends like divers do, but don’t quote me on that. 
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Todays update, just boring stuff.
The lid turned out well, the old flat-spring is in place.
As i ran out of gas yesterday, parts of the weld for the “spill-pocket” are not stainless (i had some mix-gas left in the mig) i can live with that.
Now to make a seal, cant find the 12,7 mm stove rope i saved for this
I made a new gasket for the air-transfer port, i cant tell you what old-time material i use, only that i use respiratory protection when cutting it
Lines up well, not the best way to build, but it works.
I had to modify the holes some after i re-welded the flange, also because it was a pain in the *** to get all 20 bolts in place from the beginning.
I dont recomend anyone to make a flange connection, only benefits is it’s cheap and easy/fast to build, not to disassemble/reassemble.
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Today my stainless steel filter mesh arrived, it really seems better than my expectations
This should be real fun and interesting to try.
No way im going to count the openings/square inch on this
Now i have to calm down, gasifier itself has to be ready and re-mounted on the truck before i start with the filter.
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Wow this seems superb!
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I am glad you have the same problem. I am good in starting. Finishing a project is not possible 
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I was like that with relationships as well Joep. Then I finally hooked a keeper.
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göran, try to count with a very pointed needle and a lent …
you draw the needle on the lenght by 1 cm and feel every hole…
so i have made it with the water filter…would be really interesting how much holes have your net…compared to my water filter…
mark the 1 cm with a adhesive stripe(ribbon) on two sides and make the needle test between …it is easier as with the measuring stick, because not moves during the operation…
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Thanks Giorgio, i will try that (if i have patience enough) or if wife help me 
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Not much progress this weekend, lot’s of other stuff stealing time, brother-in-law’s wedding, and helping my father installing a wood-pellet burner in his wood-boiler, he’s getting older, and it should be nice for him to get up in the morning, not having to go down the basement to fire up the boiler first thing.
Anyway, this afternoon i welded-in a piece of pipe in the bottom of the condensate gutter.
I believe it could be practical with double condensate collectors, if one clogs…
The pipe is going to pass through the other two flanges.
I also did the last work on the lid, and fixed the silicone/stove-rope seal.
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Slow progress, but now things are happening, here’s a little picture update:
New studs for the flange connection, 8mm ss fully threaded rod.
Red silicone in place, black goo near inner opening is some kind of ceramic wood-stove cement, available cheap in cartridges for caulking gun, im going to try this to relieve the silicone some, in the hottest parts. (Should withstand 1500°c)
Glueing the gasket in place, so it should follow the hearth part, and line up with the holes in the outer mantle. Ofcourse it didn’t, had to “fishing” it up with some welding wire.
New stainless studs for the air-intake.
The restriction plate is in place, i sealed it with the wood-stove cement i mentioned before, to give the ash-seal a good start.
Time to lift “her” in place, but dusk came before, hope to catch up with it this week.
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What’s your chainsaw “ornament” doin in front of the gasifier? 
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Hey JO, Goran probably prepared the chainsaw for the first gas test, before installing the gasifier on the truck. 
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Sorry for the chainsaw guy’s
I had to play a little also… 
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This is the center-pipe for the old fabric filter, im going to remake this for the ss-mesh, probably weld in a wider piece of pipe and put some wire to hold the mesh in place.
If i remember correctly it was Cody suggesting to staple together the mesh, i like that idea, and was able to find stainless steel staples on the net.
Just if somebody find it interesting, the bottom part of the center-pipe is a piece of military-tent-stove chimney, these are made to fit snugly into each other, and gives a easy separable fitting, the filters weight itself pushes it down tight.
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Ok, good idea anyway, thanks for makeing me aware of it, definitely going to try with staples
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Get a shipping box stapler and fold it over two times. This fold is what holds it together and the staples simply keep the folds.
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Thanks Matt, that was just what i had in mind, folding the mesh.
I have a stapler shaped like a “pliers”? very heavy duty, i believe it should work good, going to try when the stainless staples arrive.
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Some pic’s again, due to some health issues i didn’t lift the gasifier in place this weekend, instead i did some work on the filter.
I cut a bigger pipe (3 3/4inch maybe) and cut holes everywhere in it, to be the center of the new filter.
I decided to make a “cage”, to hold and spread the mesh, in a “cogwheel” shape.
Here i made a pattern board, like when doing wiring harnesses.
I used stainless steel binding wire.
One welded in place, 29 left.
Two reinforcement wires each.
Sorry, blurry picture (or blurry background)
Four of them welded in place, my goal is to weld some every day after work, and have all in place to next weekend
Edit: yes, it looks like a umbrella after a grenade detonation…
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