I got a free Delta 34-740C tablesaw (gloat, or maybe not). It had sat outside over a southern Ontario Canada winter. The top was rusty but a little sanding and some Topcoat got things sliding again. I had to replace the plug too as previous owner had cut the ground pin off.
After a lot of oiling and greasing, I got a new blade (Oldham 60 tooth finishing) installed and did a few test cuts. I couldn't get a nice clean rip (wrong blade?). After I hit google and the newsgroup, I got myself a dial indicator. Runout on the blade just below the teeth was
0.038. Runout on the arbor flange was 0.005. I found the high spot on the arbor flange and did some sanding. I stopped after I got it down to 0.004 and put the blade back on. Blade runout was down to 0.029 - still not good but a step in the right direction.Before I go back to sanding I'd like to ask a couple of questions. I've read that the proper way to address this problem is the remove the motor, strip out the arbor , and have the flange fixed on a lathe (BTW, this saw is direct drive). Can I expect that my sanding will ever get the flange down to 0.001? Is hand sanding the flange dangerous?
While I was sanding, I noticed that the arbor flange was not tightly fixed to the motor shaft. I didn't notice any play in the motor shaft. I couldn't move the flange in or out but I could, however, turn it side-to-side (I'd say less than a 16th of an inch, just enough to notice). I don't know how the shaft and flange are assembled - press on, welded? With the blade installed everything feels tight and secure but I wonder if this thing is safe. Any thoughts would be appreciated.