Originally Posted by
illinois
My opinion is that most of us are an impatient lot and we spray and press to quickly. The starch needs time to soak "into" the fabric rather than "on" it. The gunk on the iron is essentially the starch sticking there instead of the fabric.
I agree with this. My iron used to gunked up and I'd have to clean it regularly. Now I spray the starch on my fabric and then let it sit. Then I press from the opposite side that I sprayed on. I rarely have problems getting brown gunky starch on the bottom of my iron now.