Step 4 — Check and Adjust
Let the iron and fabric do their work, making sure to check if progress is being made every minute or so. You don’t want to leave the iron unchecked for too long, just in case it may be getting too hot for your wood surface.
But if the heat mark remains unaffected after checking a few times, turn up your iron by only one setting at a time and give it another few tries. Repeat until the heat mark begins to fade.
Once you notice any progress at all, that’s the temperature you’ll want to stay at. Keep going, and after a few minutes, the heat mark should be gone completely.
Of course, the most effective heat settings will vary from iron to iron, but keep in mind that it never needs to be very hot. For me, I started to notice significant changes on just the second lowest setting, and after 10 minutes, it was as though the mark was never there at all.