Bosch LS010 Miter Saw Laser Washer Guide, Black

I didn't quite understand why this didn't work on the Bosch GCM-12SD sliding miter saw, so I bought it. When I got it, I finally understand what the problem is ... there is, on the back of the laser washer, a keyed hole. That keyed hole is not deep enough. As a result it does not sit close enough to the blade to tighten down the blade. So, the blade will not "catch" and thus spins independent of the motor shaft. Not good, Bosch ...So here is what I did to fix it. I got some of that thick rubbery material that you use to line cabinets and I cut it into a circle (the size of the laser washer). I then cut a small hole so it would fit between the laser washer and the blade. Now, when I tighten the laser washer the rubber material fills the small gap between the laser washer and the blade. Problem solved.The laser still seems to be accurate on its cuts, so all is good. So happy to have a laser on this awesome saw!As for brightness, i use my saw indoors and I have no problem seeing the laser. I love how the laser line is very fine making it easier to make accurate cuts.All in all, bosch needs to fix this design flaw. Until then, use this method and it works great.

I almost didn't buy this based on all the negative reviews here, but it works great for me. I question whether all the reviewers here have actually used this. Contrary to what others here have written, it fits fine on my Bosch Axial GCM12SD. I use this primarily in my indoor shop and the line is plenty bright. Because the washer is on the side of the blade you will need to ensure that the line is on the side of where you intend to cut. Perhaps if I was using this outdoors my experiences would change, but I have not yet had a need to. My only complaint about this product is that fact that the laser will not project until the blade is spinning. This feature is common to all the laser washers so its not really a complaint about this product in particular.

Works just fine with my GCM12SD. Ideally I really wish Bosch included the dual lasers like the Euro version of this saw has, but this is not a horrible option. I have other saws with lasers and most are unreliable, inaccurate, and go through batteries like crazy because I will just leave the laser on all day. This one is always accurate, and is not on when the saw isn't running so the batteries last longer. Of course the biggest downside is that it's not on when the saw isn't running so it's not very useful for making quick reference cuts. Like a lot of old school finish guys learned to do precision cuts by intentionally making notch cuts off my mark and then working the piece in while the blade is running, so this laser is similar to that process, but just simplifies it and makes it faster. However for a novice who is not used to or comfortable with moving the workpiece while the saw is running, this could be dangerous. It's also fairly dim and almost unusable in direct sunlight, but almost all lasers are, and Dewalt's XPS is completely useless in similar conditions. All in all it's not great, and it definitely has some flaws, but it's useful and a worthwhile addition.

Contrary to some of the other reviews, this does work on the GCM12SD. I'm not saying those reviewers are wrong, just that Bosch may have changed the design of either the laser or the saw in response.Since the unit is, by definition, aligned with the blade, it very accurately represents where the blade will cut IF you always hold the blade at the same height when aligning the piece to cut. That's the one problem with this: the laser is not perfectly parallel with the blade (nor is it designed to be). So, as you lower the blade the line moves. In some sense that's a pretty bad design flaw. But it does mean that the line can actually represent where the edge of the blade will cut, which a truly parallel beam could not do. The trade is that you have to figure out the approximate height where that is true. (According to the instructions that's about 6 inches above the piece, and that's proven about right for me.)I also have a sneaking suspicion that those who find the laser to be too dim are trying to view it while the lower blade guard is still covering the blade (i.e. when the saw is in the UP position). In order for the line to be bright, you need to lower the blade slightly so that the guard retracts. This also brings the laser closer to the work piece, which makes it brighter. The fact that the laser is casting a line by spinning means that the brightness is inversely proportional to the distance away from the wood.All in all, this is probably worth it for the price. It would be nice if Bosch would actually put lasers on their darn saws (they aren't cheap) but absent of that I recommend this.

This is hands down the best upgrade you could get for your miter saw. I went in worried by the bad reviews, but found that it is bright and accurate and exactly performs it’s described function. Comes with batteries in the unit and a spare set. I’d wager that by the time I need to buy batteries I’ll be too old to operate the saw.Installation is easier than a blade change. To use, just operate the saw normally. As soon as the blade guard retracts you’ll have a bright super narrow laser line. The line will be exactly where the edge of the finished cut will be.