Cheap spool gun mod

[Frank S]

Have you tried it with flux core?

The only thing I rigged up the spool gun for was to be able to run 0.030 or 0.035" aluminum wire without it constantly bird nesting at the rollers like it will do when trying to feed through a long gun hose. welding aluminum using a conventional mig gun can be accomplished when the guns are around 6 ft long with nylon liner tubes and the stem of the gun connection is super close tot the drive rollers. My mig gun is not.
If by flux core you are referring to the gasless wire the answer is no I have not tried it with the spool gun. I see no reason for doing so for my purposes.
I have used the gasless flux core through many other long guns But I really don't care for it all that much, for most things that I weld I prefer to run duel shield flux cored wire with CO2 shielding gas the difference between the 2 types of wires are like comparing 6011 trash rod with 7018 low hydrogen rods.
Even 7018 low hydrogen rods will not achieve the same quality welds as the duel shield wire will do.