[Railgun]

Using grinding wheels anywhere near your lathe is NOT a good idea. The wheels abrade as part of their use and the grit flies everywhere. This extremely abrasive grit will wear your bedways prematurely in short order unless you take great pains to sheild your machine with plastic or some other way of avoiding any chance at all of any grit getting onto the bedways.

There's also toolpost grinders used for grinding operations in the lathe. Again, on the rare occastions that no other method is practical I'll move heaven and earth to shield my lathe bed and then vacuum the dust away before removing the shields.

Now on the other hand grinding HSS or carbide lathe tools is a common and frequent occurance. I'm sure as blazes not going to pause my operations long enough to anally compulsively sheild my entire oily lathe bed just to simply grind a tool.

I've got 4 grinders in my shop. One of them has a soft friable medium grit white Aluminium oxide wheel for grinding HSS and woodworking tools along with a gree silicon carbide wheel on the other side for carbide tools. Keep the grinding area at least 10 feet from the machine tools or provide for a barrier if they must be closer. A GOOD barrier. That grit flies like the wind. Especially when you need to dress the wheels to restore the aggresive cutting action to them. A wheel that looks blackish or, heaven forbid, has visible metal embedded in the face badly needs to be dressed.