I was finally ready to swap out the stock blade for my trusty Freud and put my saw to real use.
One thing I miss about my new contractor's saw is that I no longer have an arbor with flats on it like the old Skil 3400 had. I got a Blade-Loc flummy from Lee Valley because I was dubious about the manual's suggested procedure of using scraps of wood for blade changes.
So I followed the instructions on the thing. Lower blade, crank up to engage, keep the feet away from the nut. Got out the wrench that came with the saw. Bent it all to hell. Scratched my head a bit... Rightie tightie, leftie loosie. Looked at my Skil. Both are left tilt, both have the arbor oriented the same way. Verified that the threads are indeed normal right hand thread, and that I was indeed turning it the right way.
So I got a Crescent wrench (yeah, I know, but I don't have a real wrench this size) and proceeded to round off a couple of the corners on the nut. I took another crack at it, and this time I pushed hard enough to shred the hell out of the new Blade-Loc.
So I got out the old wrench that came with the Skil. I put some penetrating oil on the nut and let it stew a bit. I decided to go for the wood option after all. It quickly became obvious that all I was going to do was very slowly cut through my wood by turning the wrench.
After that, I tried a piece of 1/8" steel rod hooked under a tooth. I bent it. Repeatedly. (Need to buy my son a new rod before we launch any more rockets...)
Then I cut off a chunk of 3/16" thick 1" wide steel bar stock and wedged that under a tooth. I put the wrench back on, strained until I was red in the face, and still nothing!
I finally ended up putting a piece of oak dowel through the hole on the other end of the wrench, and pulling on it with both arms. I had to use so much force I was afraid the cast iron top on the table would buckle, and then, finally, the damn thing finally broke loose.
It looks like the nut was stuck on with cosmoline.
OK, problem solved. This will likely never happen again. I need to buy a new arbor nut eventually (different thread pitch from the Skil). In the meantime, I mostly just wanted to rant and bitch for awhile. What a PITA! Why do they do that? WTF were they thinking???