Another newbie question...
I purchased a cheap Chinese-made bench grinder to make lathe bits with.
(The alternatives I found at the time were more expensive but didn't look
significantly different, until I got to the $300 mark, which seemed absurd
for my minimal needs.)
The grinding wheels are way out of true; they wobble from side to side as
they turn, by about 0.1" over 180 degrees. It's not that the wheel itself
is bad; it seems that the flanges that clamp the wheel in place are not
square to the shaft, so they force the wheel to be at an angle with the
shaft. I did try replacing one of the wheels with a higher quality wheel
but it made no difference; that's when I realized what the problem was.
The shaft itself just has a little (~ 1/16") lip to support the mounting
flanges, and the flanges themselves are just pressed parts, so it's not too
surprising that they aren't square.
My questions are these:
1. Is this actually a problem, in practice? I'm thinking it would make it
very hard to use the side of the wheel (like to grind a boring tool) but
maybe I'm wrong.
2. What's the best way to fix it? Should I turn new flanges, add something
around the shaft to give the flanges more support, give up and buy a more
expensive grinder ...?
Thanks yet again.
17 years ago