---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Sat 08/14/10: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:27 PM - Re: copy hole pattern? (Ron Lendon) ________________________________ Message 1 _____________________________________ Time: 07:27:40 PM PST US Subject: Zenith-List: Re: copy hole pattern? From: "Ron Lendon" [quote="carlossa52(at)gmail.com"]So, with this thingy in place, you drill a 3/32" hole, and then enlarge it to #21 / 20 as need be ? And same principle for #30, I presume.. Neat! Carlos On 13 August 2010 22:42, Ron Lendon wrote: > > > Yep, Look here: > http://mykitlog.com/users/display_log.php?user=rlendon&project=113&category=0&log=59265&row=431 (http://mykitlog.com/users/display_log.php?user=rlendon&project=113&category=0&log=59265&row=431) > > -------- > Ron Lendon, Clinton Township, MI > > > [b] That's how it works. Your drills need to be sharp split point and spinning fast (my Makita 6501 spins at 4500rpm) to hold the center. Let the drill do the work and don't push to hard when marking the centers. As Paul alludes to Line drilling in steps works best. If you get the hang of this though, you can do as I do, mark the centers using this tool, drill a few of them and get some silver clecos in them, (try for every other hole). Once you have the part held in place drill all the pilot holes, open to #30 and copper cleco, remove silver clecoes and step holes to #30, #20 then black cleco, remove copper and open those holes to #20. Before any drilling, lots of clamps to hold things where they belong. Drilling holes in light sheet metal will drift if you don't keep the drill bit perpendicular to the sheet, again use light pressure and let the drill do the work. Replace worn drills with new ones, and use the split points for the pilot holes, they cut from the center. You might also need a Tight Fit Drill Kit, I use mine all the time in tight places. -------- Ron Lendon, Clinton Township, MI WW Corvair with Roy's Garage 5th bearing Zodiac XL, ScrapBuilder ;-) http://www.mykitlog.com/rlendon Read this topic online here: http://forums.matronics.com/viewtopic.php?p=308849#308849 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/zenith-list Browse Digests http://www.matronics.com/digest/zenith-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.