I am planning to get a bench grinder to use with a CBN wheel for sharpening. After hollow grinding, I plan to use Spyderco stones to hone without a guide.

Looking at past threads it appears the most desirable grinder is a half speed, 8" grinder. Although, looking at reviews for 8" grinders, the only one with consistently good reviews is the full speed Metabo. Of course, there is always Baldor, but 8" size is quite spendy.

My question is, would a 6" grinder also work for hollow grinding plane blades and chisels or 8" is really what I should get? If 6" works, half speed Baldor grinder is a lot more affordable than the 8" Baldor.

All of this is for hobby use.