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Hello,

I noticed most of the laser systems that are used in printing metal parts use noble gases. Water, Oxygen, Nitrogen, Carbon Dioxide, and Carbon Monoxide, are all reactive gases. Water and oxygen are the worst but, without actually buying large quantities of noble gases, it's pointless to worry about anything more than water, or the humidity.

So, since mounting the Easy Extruder, is optional in location, I moved mine to the left hand users side but, that leaves the left hand side to mount it, open for a few new screws. My big plan, is to print the shroud and drip pan, build a plexiglas 3 sided box around it, with a door. I tried several times and from several of the extrusions to route the wire I'll need to power and found no means of using the extrusions. So, at that point, I realized I'd being going around and through the inside of my box. But, I need a few amperes to run it. But, here's the peltier cooling unit and two heat sinks, one has an extra fan, one will be the cold side that water condenses on, and the other will just put the heat back into the air before it goes back into the chamber. A small vinyl tube, will allow it to drain the drip pan outside of the chamber, and into a glass.

Read about "shielding gas" used in welding metal. Usually some sort of argon mix, based on the material being welded. Cost is certainly a factor.

The plastics we use are largely non-reactive with air to start with. The primary requirement is that the plastic being used have a low moisture content, not because of reactivity, but because steam causes issues with the printing process. I don't think environmental humidity around the printer is a significant issue, but if you want to dehumidify it, I don't see any harm in it.

Eric wrote: The plastics we use are largely non-reactive with air to start with. The primary requirement is that the plastic being used have a low moisture content, not because of reactivity, but because steam causes issues with the printing process. I don't think environmental humidity around the printer is a significant issue, but if you want to dehumidify it, I don't see any harm in it.

Probably not going to have any significant impact on print quality. You're better off building a dryer box for your filament, then feed it through a tube all the way to the extruder.

If you're going to enclose your build chamber, you're better off heating it if you're printing ABS.