On Tuesday 01 December 2015 03:32:33 Marcus Bowman wrote: > On 1 Dec 2015, at 06:46, Gene Heskett wrote: > > On Monday 30 November 2015 22:48:23 Steve Traugott wrote: > >> For a muffler, loosely stuff some random open-cell foam rubber > >> scraps into a 5-gallon bucket. Attach an outlet hose to the vacuum > >> and stick the other end into your bucket full of foam rubber. > >> Works surprisingly well relative to the time invested. > >> > >> In the case of the bucket max, it also might work to invert the > >> muffler bucket upside down on top of it, cutting a hole in the > >> bottom for outlet air and in the side for inlet hose and cord. > >> That would kill the noise from the motor itself as well as from the > >> exhaust air. > > > > I'd have some concern about the heat rise of its motor if it was > > that confined. One 3 button run is about 13-17 minutes of runtime > > with the limited feed speeds, although I've found the 1/16" mill, > > plowing 10 to 12 thou deep, can be safely moved at 18 ipm IF the > > vacuum is keeping the cutout groove its making clean. As for > > hooking the outlet to a couple of 90 sweeps and sticking it back > > into a bucket full of foam, I don't think there is room on the floor > > for the 3rd bucket. But I have an oval wire basket from a defunct > > paper shredder that might fit, as would one of those yellow plastic > > 2 gallon trash cans. I'll check that out tomorrow, er, ah later > > today. > > > > I was surprised to see they sell a plastic muffler for about $13, > > but its only a 5 db reduction, and it could stand to be 15 to 20 to > > adequately quiet it. A 7/16" OSB box, sized to fit the space, and > > stuffed full of open cell foam might work. IIRC theres a small roll > > of rug under-layment in the basement that might be just the ticket > > except its closed cell. Or I could live with it, I've only about 40 > > or 50 more buttons to make. But the vacuum use has made it possible > > to speed things up from 4 ipm and a blast from an air hose about 2x > > a pass over the loop to clean out the groove, to 18 ipm with the > > vacuum running, so its definitely worth it. > > > > Thanks Steve. > > The other way of tackling this is to use ear defenders, although you > will not be able to hear the phone unless it is right next to you. I > just upgraded to a pair of 3M Peltor OPTIME III jobs. 38dB > attenuation, and the best I have worn yet. Doesn't solve the sound > level at source, but sure defends the ears. > > Marcus > 38 db? I have several sets of muffs I use at the rifle range with the best one being 30 db. Barely adequate to tame my Ackley-06 Improved. 3 or 4 others I use for handouts in case some idiot shows up without a set of plugs are in the 27-28 db range. I'd get a set of those in a heartbeat, but I've not seen them for sale, even online.
Where did you acquire those? Thanks Marcus. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one codebase in this all-in-one HTML5 development environment. Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs. http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
