DDWT Upgraded 340mm Track Saw Square Right Angle Circular Saw Guide Rail Angle Stop Accessories Compatible with Festool and Makita Guide Rail (Red)

Easy to attach to track and keeps the track at 90 degrees.

used it on my Wen Track Saw and was very accurate. its better than paying alot of money for one that does the same thing as this one. I would definitely buy it again and not waist my money when I do not have alot to spend but still want accurate cuts

Does NOT produce 90 degree cuts when used with my Festool rail. I used it a long time ago and had bad results. I just pulled it out again to give it a second attempt. Now it’s going in the garbage.

This is just a first impression.Conclusion:Excellent value, very accurate, and perfectly usable with some care (like all tools, really). See below for things to look out for.Comments:Before attaching the square and before cutting, it's very important to make sure there is no debris anywhere two surfaces meet, like between the track and the square, and between the square and the reference edge of the work piece. It's a very good idea to run the saw with a vacuum.There may be a lot of variance in accuracy from unit to unit. The all-important rail is attached to the body with screws. All the name brand models are machined out of a single piece of aluminum. So, test yours when you get it.I have no idea how it will stand up to use. The clips or the rail that lines up against the track (not the T-slot rail) would be be the first to fail, and those are the most important components.Pros:My unit is dead accurate. I ran the 5-cut test and the error is within measurement limits (say, less than .2mm) over about a 50 cm square. (I didn't have a bigger scrap I could use.)It looks nice. The main body machining looks very good.Cons:It's a little fussy to use. The most important thing to look out for is to make sure the body of the square is pushed up against the track before clipping it on. Otherwise it may not be snug against the track, possibly even damaging the track.The hinge pins on the clip hooks are loose and can stick out and prevent the clip handles from being pushed down.The cutouts on the body for clamps are too small.The (laser-cut?) anti-tip tab has sharp edges and might scratch the work. It has already scratched the anodization on my square and possibly cut my finger (well something cut my finger). I'll probably clean it up with a file or abrasive stick. It's not at all a critical component so I'm not worried about it.

Works great with my Milwaukee track saw and track. Square and stays square. Seems well made for the price, and is adequately sized even for my longer track. It actually made me realize that two of my shop squares were not perfectly square. Over an 8-ft distance it looked like it wasn't lining up properly to my marks when in actuality the squares that I used to make those marks were not square. Two of my higher quality squares match this perfectly

So far there is nothing to dislike. It makes it so easy to get the track set at 90 degrees from a good edge. There is no play in the attachment to the track. My best square tells me it is dead on 90 degrees. I haven't done a 5 cut test yet, but I'm convinced it is well within 1/5th of a degree.

Out of the box, this was not square with any of the multiple tracks I tested it with. There's not really a good way to make it square either. You can loosen the screws on the bar that is clamped against the track and try to adjust it, but it's very tedious. I eventually got it square enough for most woodworking use... only for the rather strong clamps to eventually pull it back out of square after being attached to the track a few times. Very frustrating. I think it's just a flawed design, having the bars that reference the track be a bit loose in the slot and then rely on friction from the screws to keep their calibration is just a bad design that was never really going to work out. There's a reason the expensive models I was trying to avoid with this more economical option are milled from a single piece of metal - nothing can go out of calibration. In the end, I can't trust this thing to do the one thing it's meant to do. Unfortunate, because it's otherwise well-made.

It was off by about 1/8” over 4ft.I tried to figure out why and I did.The small bar which serves no alignment function and only t-slot function to hold it in the slot is not milled completely and not flat. Had rounded tips. You can take a file or dremel to it. Better if you find someone with a milling machine.Take that piece off, clamp in a vise, and kill the edges. See red circles. They should have a perfect 90 degree shoulder. See green circle. Once this is done, it’s dead nuts square.To the manufacturer….you’re welcome. I just fixed your product and I hope you sell some more but please fix this.I also wouldn’t mind a royalty for fixing your product or at least identifying the root cause for you. Just saying.People, if you don’t wanna spend $$$$ and are ok with spending $ and a little bit of elbow grease it’s a great tool.