Another option is to burn it out with a disintegration machine(aka spark erosion service). My father used to do this to remove broken taps in his tool & die business. This is a special machine so you would need to find a machine shop that has one. The unique feature is that there is less chance of screwing up the hole. Dave Sontos ----- Original Message ----- From: "David Teitelbaum" <jtrealty@xxxxxxxxxxx> To: <dmcnews@xxxxxxxxxxxxxxx> Sent: Monday, February 23, 2004 10:33 AM Subject: Re: [DML] Permanate addition to engine block; where to tap a new hole? > There are only a couple of options to remove the broken bolt AND > extractor. You can try drilling with a cobalt bit. You can remove the > part and replace it. You can remove the part and take it to a machine > shop where they can try to remove it in a milling machine (a kind of > extra-heavy duty drill press). 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/