Harbor freight multitool with the curved knife blade, eats turf and leaves the glass intact.What is that? I've never seen one of those before
X2, best thing to happen to turf since, well, since turf was invented. Harbor freight had them on for $19 a couple months back but the regular price of $39 is still pretty reasonable.
I have used the original Fein Multitool as well and the cheap one worked just as good.
I might shave a slight jagged line or cut the last little bit at a corner but I certainly don't cut with those tools. WAY too hard to cut a long straight line because the blade always wants to wander off the cut line and vibrate again the sides...NOT COOL! Then the blade bends a hair and you're going off the cut line whether you like it not. Maybe the air tool version runs at a higher speed but I certainly can't control it accurately with one hand and it makes the same mess as any other tool.
I'm sure the fein tools are better than the knock offs but I bought my 60 gallon air compressor for the price of one of those things and the air compressor has proven to be a far better investment IMHO.