Greets all; I made up a wooden jig to mount the dull blades from my Delta JT360 6" jointer into the tiltable vice on may milling machines table. The tilted it to 44 degrees, one less than the OEM grind. Then mounted a dremel diamond disk in the mill and lowered it till it was about touching, turned the spindle on & started sweeping. The first blade had about a .015" taper lengthwise, so it took about an hour of making a couple of sweeps, lowering the wheel a thou, repeat till it was suitably bright & polished the full length of the blade. Very fine dust could be seen falling away from the spinning disk. On removal from the jig the first time I found it had wiped a wire edge over the cutting face that was about 20 thou high, and it took me about 20 minutes with a Smiths hard Arkansas stone to remove it. The blade didn't feel all that sharp when that was done, so I returned it to the jig & went down another thou about 5 times, this generated a new wire edge but it came off easier. And the blade felt fairly sharp, so I re- installed it, setting it about a thou proud of the outfeed table. Wash, rinse, repeat for the rest of them.
The wood I'm trying to straighten is well seasoned, clean white ash. I thought when I bought this jointer 3 years ago, that it got dull a heck of a lot faster than a little 6" table topper I also have, but that has alu tables and they'll dirty the wood. I thought as I was trying to sharpen these blades that they looked nice, but weren't much harder than some of the wheel weight lead I occasionally pour plinkers from. Fresh blades are $59 a set of 3, $123.94 from the only place that stocks them, (I ordered 2 sets since Lowes isn't stocking them and when I found that this afternoon I did a bit of grumbling at customer service, I mean I did buy it from that Lowes about 3 years ago. It won't do any good of course but made me feel better.) which to me says they ought to be pretty decent steel. These are the original blades, did I get some junk blades when I bought this thing, or is there something wrong with my sharpening technique? These were nicked and leaving lines from the nicks before I had run a 34" piece of already clean ash 2.25" wide, over this from the freshly sharpened state. (unprintable rant elided) Now, I have about a week before the new ones arrive, anybody else got a better idea? -- 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> The truth of a thing is the feel of it, not the think of it. -- Stanley Kubrick ------------------------------------------------------------------------------ Free Software Download: Index, Search & Analyze Logs and other IT data in Real-Time with Splunk. Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. http://p.sf.net/sfu/splunk-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
