I do appreciate the reply, thank you for your thoughts.
You said you have used filament from desktop extruders and stated it wasn’t as good. But was it useable? Did it work even if it wasn’t as good. I see no reason not to use it for test prints, just fooling around, etc where ultimate build quality is not an issue. Maybe as bridge/filler material where looks isnt an issue. I am likely to get a dual extruder head anyway so that is an option open to me. I wasn’t looking at it as a total replacement but more as an alternate source of usable material. And its basically free outside the energy costs to run the extruder.
I just thought it would be a useful source to draw on in the case where you are printing fast/low rez just to bang something out to see if it will work/fit/etc. Then save the commercial filament material for the final print. Not a wise solution? Or is it even worth it? I mean seriously, PET goes for around $40 a pound in 3mm. I can produce second hand filament for a buck or two in electricity. Even if I am just using it for fill material, its still cost savings. No?
The one I am considering is the EB2 Filament Extruder. It seems to have good reviews and fast extrude speeds and will accept a variety of source materials.