Well, I'm going to have to disagree with those who say it can't be done. In fact, the first plane that I covered was covered completely using a travel iron that I have. So yes it can be done. As others have said, you will probably get colors leeching onto the iron, so make sure you clean the iron off before you use it for clothes again. You will have to do some experimentation to get the temperature correct. Work on a small area that is hopefully out of view. Start with the temperature at a lower setting and slowly move the temp up, testing after every temp change, until you find the correct temp setting that will work for you.

Now with that said, a new covering iron only costs about $12. You would be much better off if you can get the tool designed to do the job. [link]http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXJD40&P=ML[/link]

Hope this helps

Ken