https://www.panucatt.com/Azteeg_X3_Pro_p/ax3pro.htm

I think the azteeg x3 pro will be the best option I will need to add a fourth extruder for placing an electric and ionic insulating material.

I picked up a bottle of CO2 and argon today from my jerb I might need to run straight argon in this system for any lithium or potassium hydroxide supercapacitors as they absorb CO2.

There is always that option or going with a delta morphology inside a composite reinforced cement tube. Then pulling a vacuum on the whole thing to reduce vapor pressure and reduce drying times.