I have used teflon tape (type for plumbing) for this. It is thin so a few turns around a screw don't put much pressure on small parts but, even though it is slippery, it fills in microscopic imperfections so parts don't loosen by vibration. Scott AA0AA
Sent from my iPhone On Dec 28, 2012, at 12:08, "Ron D'Eau Claire" <r...@cobi.biz> wrote: > Be careful with locktight. It v-e-r-y s-l-o-w-l-y dissolves many > plastics. > > Some years ago I applied some to a screw securing a plastic part and over the > next six months the plastic gradually disintegrated starting from the point > where I applied the Locktight. ! > > I now consider it for use ONLY on metal parts. > > Instead I borrow a trick from my post WWII aircraft service days: paint. A > drop of fingernail polish between the nut what it tightens against works very > well. If you don't want it visible, paint the threads with some and then put > the nut on over it, or paint the face of the nut that presses against the fan > with black fingernail polish (a common color nowadays :-) and screw it in > place before it dries. > > It's not so strong that you can't remove the nut, but it should prevent > loosening due to fan vibration. > > And then there's always lock washers. > > 73, Ron AC7AC > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of P.J.Hicks > Sent: Friday, December 28, 2012 9:19 AM > To: elecraft@mailman.qth.net > Subject: [Elecraft] Problem with a K3 screw > > > > As long as we are talking screws I thought I'd mention a situation that > occurred last night. While moving my K3 to get at the rear panel I noticed > that one of the acorn nuts from one of the fans had fallen off. In checking > the rest of them I found them in various stages of looseness. I suspect that > the minor fan vibration caused them to loosen. I retightened them and plan on > adding a bit of locktight in the next few days. Just a heads up. > > > > PJ, N7PXY > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
