[Shalecnc]

I'm trying to decide between two 6" vises from Shars.com, the 690V 6" CNC milling machine vise for $275, and the 660U 6" CNC milling machine vice for $380.

Both have .0004" repeatability. The 690V seems to have more travel, but based on the shape, seems (to me) to be harder to square w the table. The 660 can also be installed sideways, not sure if that's worth the extra $105 though?

[dblox]

Long ago I purchased 3 vices all in the same style as the cheaper vice you linked, but now I find myself regretting that none of them can be mounted on their side. Go for the one with ground sides!

[Shalecnc]

Thanks. Still trying to decide if it's worth returning the 5" vise I already got for credit? After shipping that's only $50, thinking it would be better to just have a second one?

I'll be CNC'ing my Grizzly G0704 -- think it's worth having 2 vises on the same bed? Or would that just be too much extra weight for a G0704 bed?

[mactec54]

Shalecnc

The 660 every time, the other Vice although is a good Vice it has a keyed back jaw

The 660 is not keyed, Base & back jaw are all one piece, worth the extra money just for that

[Shalecnc]

Thanks Mac, I went ahead and ordered the 660u