On Thursday, May 05, 2011 09:25:05 PM Peter Blodow did opine: > Sorry, Gene, I can't by all means imagine what you have done and what it > is good for. One picture would say more than a thousand words. > > Peter > > gene heskett schrieb: > > Using a piece of the electric plane blade, I machined a 1/4" thick > > piece of hot roll with a dovetail profile that included a high center > > so as to flex the carbide ever so slightly, but when trimming it to > > length with a diamond wheel, I overshot it a couple of thou. So I > > cut a hacksaw slot in the center that went all the way through the > > central mounting screw hole and pinched it shut several thou with a > > hammer. Carefully driving the carbide piece into the dovetail, I > > centered it up and slathered on 3 drops of Loctite's superglue in the > > blue bottle. Installed to the upper guide, I note that if its > > touching the running blade, there is an occasional 'sparklie' about > > 3/4" long coming from it, but can't determine if its because its > > cutting into the back of the blade with an exposed end or what. > > Visibility isn't that great due to the rest of the guide holder being > > in the way. I did lay the ends back at a 2 or 3 degree angle with > > the diamond wheel so it should wear smooth eventually. I think I am > > going to like it, and will make a duplicate piece for the lower guide > > as the replacement ball bearing I put there yesterday won't last > > long. The saw certainly runs quieter.
The lower thrust shoe is now carbide too, but by a somewhat simpler method. The carbide is about 44 thou thick, so I machined a recess .039" deep and about .745 long, then took the diamond wheel and formed the ends of the recess into the dovetail angle as shown below. Marked and cut another piece of the planer blade about .800" long, then very carefully trimmed the ends at the dovetail angle until it almost fit. The recess was polished an additional 2 thou deep on each end so that when the carbide was driven into the dovetail, it would be flexed to be about 2 thou high in the center (length wise). It fit pretty snug and I padded the hammer face with a sheet of kick panel brass so as not to shatter the carbide. I also faced off the steel ears holding the dovetail down on each end, an extended that 'ramp' onto the ends of the carbide about 1/8" so that if it gets tilted a degree or so, the end of the carbide would not cut into the back of the blade. Then lots of file & fit, wash, rinse, repeat until the top of the holder was jammed pretty solidly into the guide bracket assuring the blade won't be cut by the end of the carbide chip as long as the whole guide doesn't tip, (and it can). Adjusted the blade tracking on both wheels & then walked the top flitches thru it that the wood mizer cut off the logs I cut last week and made me another 10 bd/ft of usable cherry, very smooth cuts now. A side view in ascii: ______blade_runs_here_______ | /_carbide_chip_in_here_\ | | | | | | | | | | | | bolt-->0<--hole | | | | | | | | | | | |__________________________| Now, imagine the top surface shown here is crowned about 3 to 5 thou so the back edge of the blade only touches near the center of the carbide chip. This one isn't even super-glued in, it was a _very_ tight fit. Is that better? Not a pix, but my Nikon L-100 doesn't to macro focusing at all well. Then I went over to the hill to see again how hard it would be to get up to about 1000 bd/ft of cherry, 4 trees in one pile, and 200 bd/ft of Maple (all in one tree) got in my way, so about 8 pieces of it are on the trailer & headed for that sawmill. And that was less than half that tree! The sawmill is less than a mile away. But the rest of that maple will need to go before its safe to start dragging 2' diameter, 8' cherry logs down that hill. There are trees holding up other trees I have to work under, and some of those are 14"ers, propped up 30 feet up! Hundred ten plus mph winds tend to leave a mess and that hill is not an exception. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) <http://tinyurl.com/ddg5bz> <http://www.cantrip.org/gatto.html> Revenge is a form of nostalgia. ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
