If you are using a heat gun for discharge do you wear some kind of respirator? I hear it's not good to do inside your house because of the fumes/gas that it creates.
I would definitively not do it inside your home. I do it in my 2 car garage with the door open, a respirator, and a fan blowing it out the door away from me.
There is mixed information on the subject. My understanding is that the first generation discharges gave off formaldehyde during curing. but the newer generations of bases have formaldehyde scrubbers in the base to prevent the chemical from becoming airborne. The activator that gets added to the base is a complex formaldehyde zinc compound.
What is supposedly given off these days is a zinc surfer dioxide, it smells terrible, and I don't think it is healthy to breath in, but not as bad a formaldehyde.
Either way, I decided to be safe and get a respirator that stops formaldehyde (they are hard to find), lowes, home depot, ace, none of them carry one that does. You need to buy the mask and then the cartridges that block formaldehyde, I ordered mine from Grainger, I think the whole set up cost like 40 bucks, the cartridges are 10-15.
It completely blocks the smell of the ink, so I imagine it's blocking the chemicals it's giving off

. if nothing else it makes me working with it much more enjoyable. If you don't know anything about respirators they come blocking a slew of chemicals, you wont find one that just blocks formaldehyde, it will include it, and 10 other chemicals.