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Cleaning up an old Wellsaw M1000 Horizontal Bandsaw, Part 10:

Wellsaw Horizontal Bandsaw

After that, a couple wire brushes and a portable sandblaster gun took care of the paint...

Wellsaw Horizontal Bandsaw

And two hours fabricating a custom wrench finally got the junction box off the side
of the stator housing so I could clean it, too.

Wellsaw Horizontal Bandsaw

After that, the usual self-etching primer...

Wellsaw Horizontal Bandsaw

And two coats of my patented Boring Grey Machine Enamel. And while that's drying...

Wellsaw Horizontal Bandsaw

I noted that the output shaft of the motor looked a bit wonky, like somebody might have
literally run a file on it while it was turning.

Wellsaw Horizontal Bandsaw

Today, I got out the calipers and gave it a closer look. Sure enough, it's in bad shape. It's supposed to be
nominally a 3/4" shaft, but the end was two thou oversize, likely from being dropped or being hit by something,
while just behind that was almost 20 thou small.

Now there's two ways to fix this. I could have simply chucked it up in the lathe and turned it slightly
undersize 'til it was straight, but I'd either have to turn it all the way down to 1/2", or custom-turn
a new pulley from scratch. (The typical pulleys being die-cast, don't have enough 'meat' to properly
sleeve for an insert- and you'd have to sleeve it pretty large to make room for the keyway.)

The other way, of course, is to weld it up and turn it back down. This, as they say, is not for the faint of heart.

Wellsaw Horizontal Bandsaw

First, we turn up a nice thick aluminum collar with the same bore as the OD of the part of the shaft where the front bearing went.

Wellsaw Horizontal Bandsaw

Bandsaw that puppy in half...

Wellsaw Horizontal Bandsaw

And clamp it to the shaft wheret will both protect the bearing surface, act somewhat like a heat sink,
and keep me from welding too far up the shaft.

 
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Information contained in these pages is for reference and entertainment purposes only.  Our methods are not always the best,
quickest, safest, or even the correct ones. It's up to you to know how to use your own machines and tools.
Keep your fingers away from the spinny blades o' death and you should be all right.