I started to remove the undercoating today.  I used a steel brush wheel on my drill.  It didn’t work all that great, but it did kind of work.  It removed it, but it would also heat up at times and just smear the undercoating. I researched a better tool to use and found out about something called a Needle Scaler.  I’ll have to get one and try it out.  Here are some pics of the undercoating with some of it removed toward the front of the car…