Although it is now 2018, I bought mine at the Springfield store in early 2016, but just recently had the opportunity to use it. I lived overseas for many years and in moving back to the USA, I have had delays in setting up my shop for efficient use. Soon after the purchase and bringing it home, I immediately pulled it out of the box and checked it out, particularly for wobble. It did have some visible wobble to the grinding wheel, so I set out to correct it, which wasn't too difficult. I set a stand next to the stone and a screw next to the top edge and rotated the wheel. There was about 1/8" of lateral movement with a each revolution. I loosened the nut, made a reference/registration mark on the shaft, and rotated the wheel by 1/8th of a turn, tightened the nut and checked again. I did this (1/8th turn) for a full 360°. There were two points in which the wobble was negligible and I tightened the wheel at the point and checked again. That was 2 years ago. I recently completed the work in my shop and first two items to install were the dust collector system and Wet Grinder for sharpening tools.
I cannot believe how good this tool is. I have read and know from experience that tools are only as efficient as the user. I have had a 1750 RPM grinder for a long time. With this Grizzly grinder, I had to adjust my attitude at little. It takes longer on the wet grinder to arrive at a full grind on a chisel (wood or lathe) than on a 1750 grinder. The advantage is that it does NOT get hot. I felt the edges of my chisels after a full face grind and was happy with the sharpening. However, I knew the edges were not where they needed to be. I then used the paste and leather for honing. This dramatically increased the sharpness, but it was still not where I wanted it (and I knew it would not be at its sharpest). For years, I have done a final HAND honing of my tools. I have 9 micron, 1 micron and .3 micron sharpening sandpaper that I then swipe the tools across to finish sharpening. The Grizzly Wet Grinder makes it so much easier and faster to get to the final stage of hand honing, and the fact that the tool stays cool during sharpening (and the grind is washed away) the tool HOLDS the edge longer.
The right attachment is needed for each kind of tool to be sharpened. This is not fool proof. It takes some observational skills and some thinking combined with experience, very much like driving a car and knowing when to speed up, slow down and turn. The Grizzly Wet Sander gets a FULL 5 stars from me.