---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Wed 09/26/07: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:02 AM - Re: Fly cutters (Jim Fogarty at Lakes & Leisure Realty) 2. 01:09 PM - Wing mounting bolt direction (George Inman 204 287 8334) 3. 01:19 PM - Re: Wing mounting bolt direction (Dale Ensing) 4. 02:06 PM - Re: Wing mounting bolt direction (Terry Watson) ________________________________ Message 1 _____________________________________ Time: 09:02:20 AM PST US From: "Jim Fogarty at Lakes & Leisure Realty" Subject: Re: RV-List: Fly cutters General information, do not raise the fly cutter after you have cut through the aluminum with your drill or drill press still running. You will have a flying disc heading for a perfectly good fuselage, VS or other airplane parts, including the pilot. I had a disc hit the VS and fortunately I did not have damage, thank you lord. Jim RV9a ----- Original Message ----- From: "Sam Buchanan" Sent: Tuesday, September 25, 2007 4:32 PM Subject: RV-List: Fly cutters > > The following posted for the benefit of builders who have yet to use a fly > cutter: > > Like all power tools, the fly cutter has the potential for being extremely > dangerous. What makes it particularly hazardous to RV builders is that the > project may be the first time a fly cutter has been encountered by the > builder. True, common sense will dramatically reduce the odds of an > accident, but when a fly cutter and the material being cut gets loose, the > results can be catastrophic. > > Somewhere on the web a few years ago a photo circulated of a mangled hand > that had a most unfortunate encounter with a fly cutter. The points > presented in Paul's post below are certainly valid and detail a great way > to tame the fly cutter. > > In my experience the two most common errors in using the fly cutter are > failing to TIGHTLY clamp the piece to the drill press table with a wood > backing and failure to use a SHARP fly cutter. If the cutter gets dull, it > WILL snag in the cut, hopefully stalling the drill press, but if the work > isn't tightly clamped, and the drill doesn't stall, the whole deal becomes > a whirling guillotine. > > Another hazard is failing to stay clear of the cutter. Depending on the > speed of the drill press, the cutter bar can be nearly impossible to see > and dangling clothing or careless fingers can instantly be pulled into a > really bad situation. > > Yep, a fly cutter can be used with a hand drill.....I've done it when > needing to add a hole to a panel in an assembled plane (didn't enjoy the > process, however), but this only increases the possibility of having an > accident. It is easy to let the cutter get less than perpendicular to the > work and then there are problems (see above). > > So, be careful, work slowly, keep the work securely clamped and the cutter > sharp, and all should go well. Violate any of these guidelines, and your > building progress may be uninterrupted while you learn to use fewer > fingers. > > Let's be careful. :-) > > Sam Buchanan > > ======================= > > Joseph Larson wrote: >> >> You know, I never had a problem with my fly cutter, and I was a lot less >> cautious than this. I normally run it on the slowest setting on my drill >> press, but I even used it with a variable-speed hand drill. With the >> hand drill, I was still careful and I went slowly. >> >> When using a hand drill, you can feel when something isn't going right >> and can adjust accordingly. >> >> So, I'm not sure what the dangers are, as long as you respect the tool. >> Did I just get lucky? >> >> -Joe >> >> On Sep 25, 2007, at 2:08 PM, PSPRV6A@aol.com wrote: >> >>> Fly cutter hints: Yes, The fly cutter can be a loose cannon, but >>> done right it can be tamed. First, mark all the centers carefully and >>> drill (not with the fly cutter) 1/4". Drill the ribs undersize and ream >>> to 1/4" if you have a reamer. Fit the fly cutter with a 1/4" SMOOTH pin >>> NOT a drill bit. Grind the cutter blade to a narrow cut, about .050 at >>> its outer edge. Use only about a 7 degree clearance angle. >>> Set up a sturdy board clamped to your drill press table and drill >>> about 15/64 and then "burn" to 1/4" with a smooth pin. A few drops of >>> oil in the hole will help. This will give a firm outboard pilot for >>> fly-cutting. Now mount up your fly cutter and float the SMOOTH pilot >>> pin into the rib hole and into the board. Clamp the rib to the board >>> and only now start the drill press. Use rather slow speed, but you may >>> feed quite firmly until near breakthru. A touch of oil will help but is >>> not always needed. This makes fly cuttin a piece of cake! >>> Good luck,. Paul S. Petersen >>> >>> Minnetonka MN RV6A nearly complete with son Eric > > > -- > 269.13.30/1030 - Release Date: 9/25/2007 8:02 AM > > ________________________________ Message 2 _____________________________________ Time: 01:09:03 PM PST US From: George Inman 204 287 8334 Subject: RV-List: Wing mounting bolt direction I cannot find an instruction on the direction for the main wing attach bolts in the center section.Does the nut go to the front or back? Or does it matter? RV-8 QB -- George H. Inman ghinman@mts.net ________________________________ Message 3 _____________________________________ Time: 01:19:02 PM PST US From: "Dale Ensing" Subject: Re: RV-List: Wing mounting bolt direction Good practice puts the bolt front to back with nut on aft side. But, if ability to properly torque the nut is not possible, do what works best. Dale Ensing RV-6A ----- Original Message ----- From: "George Inman 204 287 8334" Sent: Wednesday, September 26, 2007 4:07 PM Subject: RV-List: Wing mounting bolt direction > > > I cannot find an instruction on the direction for > the > main wing attach bolts in the center section.Does the nut go to the front > or back? Or does it matter? > RV-8 QB > > -- > > George H. Inman > ghinman@mts.net > > > ________________________________ Message 4 _____________________________________ Time: 02:06:18 PM PST US From: "Terry Watson" Subject: RE: RV-List: Wing mounting bolt direction On my 8A, I don't believe it is even possible to put the bolts in from the front. Terry RV-8A Seattle Wiring -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of George Inman 204 287 8334 Sent: Wednesday, September 26, 2007 1:07 PM Subject: RV-List: Wing mounting bolt direction I cannot find an instruction on the direction for the main wing attach bolts in the center section.Does the nut go to the front or back? Or does it matter? RV-8 QB -- George H. 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