I am sure I am not the only one that has made this mistake so I thought I would share. I was working on a project and while using iron-on-interfacing I did not cover it with the paper completely. Needless to say I had a big mess and one sticky iron plate. So what do I do when I have a problem like this, right google it. I read that you can purchase and expensive iron plate cleaner or you can just iron dryer sheets.
I put an old towel under the dryer sheet, set the iron on to a pretty hot setting, and started ironing. It did take a a few sheets but it is now as good as new. Quick tip that I am sure I may need again in the future.