Your best bet is to remove and replace anything with rust. You should also be careful about the material you use for a patch. For example, you should select the correct thickness and grade of metal. You may want to look at galvanized replacement panels as well. -- Mike > Should I bother trying to sand-blast?-or just go ahead and cut all the > rust away...? See also my problem is that since the frame is designed > with hollow sections inside of each rail-such as on the double "Y" > parts, it is impossible to see what is going on inside. I will never > know where the rust is forming unless its on the outside of the rail. To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/