Just my opinion.......Use cobalt or titanium drill bits, turn them real slow (as in the slow setting on a drillpress), and keep them oiled throughout the process.
Scott --- Serge VIDAL <[email protected]> wrote: > This is one is for steel specialists: > > My taildragger KR2 main landing gear legs are made > of spring steel. They > hold to the gear brackets by 4 bolts each. The bolts > are metric, 10mm > diameter. > > I would like to change that for the nearest AN size. > That would be an AN7, > which is 7/16", that is 11.11mm. So I would have to > enlarge the holes. > > Now, I don't know much about steel, but I know by > experience that it is > very hard to drill through these legs, since 3 years > ago, I tried to drill > a couple of tiny holes to hold some brackets for the > brakes lines, and I > gave up. > > Questions, then: what are my chances to succeed, > what kind of drill bits > should I use, and what is the correct drilling > technique? > > Serge Vidal > KR2 "Kilimanjaro Cloud" > Paris, France > _______________________________________ > Search the KRnet Archives at > http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to > [email protected] > please see other KRnet info at > http://www.krnet.org/info.html > __________________________________ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.yahoo.com
