BLACK+DECKER MATRIX Trim Saw Attachment with 3-3/8 Inch Carbide Blade 24T (BDCMTTS)

Bught this saw for a single siding project that was done using ladders and an aluminum plank. I installed approximately 450 sf of cedar singles on three gabbel areas on my house. Teh work area was varied from 11 to 17 ft above the ground. Since I was working using two ladders and an expandable aluminum plank, I needed to cut various shingles to match the roof gabel. It took about 600 custome cut shingles at a 30 degree angle to match the roof. Each cut was somewhat different. At $450 per square for shingles, I didn't want to make any mistakes and waste a shingle.I have numerious battery powered saws but all were large and heavy used primarily for stud lumber framing. I needed a single handed small lightweight battery powdered saw that would quickly cut 1/4" shingles safely. I bought and returned a Ryobi and DeWalt 4" saws becuase I had the batteries.I finally stumbled accross the Black & Decker mini saw attachment. Well I bought it and the requiured Matrix drill and battery. The total coast was less than $100 for all the items I needed. The saw worked better than I expectted except for one feature. When using the saw, I found I needed to use my trigger finger for the on/off trigger and my middle finger for the saw's safety switch. It didn't take me long to develope the muscle memory to first push the saftey switch with my middle finger align the saw then pull the power trigger. I was hoping that Once I attivated the saw, I could release the safety switch but unfortunately it didn't work that way for me. The whole saw system was so light and manueverable that I could stand on the ladder, draw the cut line then make the cut standing on the ladder. I felt vary safe, never loosing my balance and making accurate cuts. While that may not sound like much but I'm almost 78 years old with back and balance issues.Two interesting facts have bee of interest. First, removing the drill attachment was actually very difficult becuase it seemed to be "stuck " to the power pistol grip. It took a few friendly wacks on the drill side to "bust it loose". The saw attached easil;y. Seondly, the directions to install the blade is buried in the user manual in a small portion of a page. It doesn't state but the blade set screw is LEFT HAND thread not right hand thread.Once you discover that fact, blade installation and removeal is easy. Be sure to snug the screw up so the blade is attached soilidly to the drive plate.In summary, I'd buy the attachment again. It was the first Black & Decker tool I have bought in over 30 years. It works well and is holding to my useage.

super genial para mis cortes, justo lo que necesitaba

it was easy to use no wires around, battery operated

The only thing I will fault it for is the horrible instruction manual.There are 8 or 9 paragraphs with notes and dangers and warnings.There are 2 bullet points with parts that are not on the parts image with basically no information on how to install the blade.1) Opposite the side where the blade is (right hand side when it is properly facing away from you) is a built-in hex key. Pull it out.2) Push the button in above that hex key and continue to hold it.3) Use your thumb to pull back the blade guard on the other side all the way and continue to hold it.4) Insert the hex key into the bolt on the same side where the blade goes. Turn it "lefty loosey" from the perspective that the right-hand side is the side you're doing it from, even though that would require you to have x-ray vision. You're basically turning it towards you while the saw is properly facing away from you, and to the right when you're looking at the side the blade is on.5) Remove only the top part of the bolt assembly such that the notched washer and the bolt come away.6) Insert the blade with the writing facing you after removing any blade that is currently there.7) Replace the notched bolt with the notch inwards towards the blade, and the flat side matching the flat side BEFORE putting the bolt back in. Make VERY SURE that you seat both the notch and the flat side line up before you line up the bolt. For those of you who haven't yet been told, make sure to turn the bolt a couple turns in the "loosey" direction to get the threads to properly seat flat so that when you fasten it, the cattywampus-ness isn't where you start off from in frustration.8) Use the hexkey the opposite way you took it off: righty-tighty from the perspective of the button you're still holding down, lefty-loosey from the perspective of looking at the blade, away from you from the perspective of the saw looking away from you. Once it feels tight: STOP. The steel on this feels like it can and/or will strip very easily and this is not a replaceable part unless you count replacing the entire tool.9) Attempt to move the blade--it should not be moving either vertically or laterally or rotationally. It should be static both at rest and when you try to move it. I'm sure there's enough pressure to force it to move but you're going to be destroying parts that are going to be making you replace the entire tool so use some common sense. If it moves, you will need to make sure the bolt is securely fastened as much as it should. If it isn't, you either didn't seat the notch blade side-in and/or the flat side to the flat side. If you don't get it right at this stage, the carbide can chip and blind or maim you. It's not as cool as the movies make it look and it won't be a cool enough story to tell anyone outside of a cautionary tale.10) Release the blade guard from your thumb. Release the gray button you've been holding. Once again: check the blade. It should resist you a little to spin and that is all.11) Remove the plastic/protective covering of the blade.It's now ready to use. The first few yards of cutting will deposit whatever black stuff is on the individual serrations of the blade. If you're using the wood for pets, potpourri, or food, take that into consideration because at the very least it's paint and at the very most it's an anti-corrosive agent likely to contain some sort of metal--both of which will either aersolize when cooked/baked/burned or deposit into the crop/stomach of your pet. The smaller the pet, the greater the concern. It's a standard thing for blades BUT just be aware it's there before using it thusly.It is very accurate with a very thin cut. It appears to cut about 1" deep and it has less waste than the diamond wood cutting attachment for the corded Dremel, even for thin slices. It can make 1/16 slices of untreated pine, which is what I'm using for my current project.I'm removing 1 star for the horrible directions. I was also disappointed to find out that this system has existed for 10 years and there have been no upgrades to it. I'm hoping Black and Decker will continue to work to improve their product.***HOWEVER*** DO manage your expectations. This is NOT a tool for professional masonry and there is no changing the size of the cut unless you start doing some janky, warranty-doesn't-cover things. This is for up to a moderately serious hobbiest but can be used by beginners. And you also need to be aware that the drive is NOT brushless so it will heat up faster with any dust that you have going on, meaning it is intended for short bursts. If it in any way starts to feel warm, stutters, kicks back, etc. you're overtaxing the system and are asking for one or both of a heartache and/or an injury. I've so far cut everything from 3/8" x 6" craft pine boards to 1/2" x 1"s normal lumber (again, both untreated). The only problem I had was when my lupus hands were starting to fail and was trying to hold the saw at an inconsistent angle, which would also be a (potentially dangerous) problem with even professional masonry tools.Love the system! I've only had it for a day but so far I'm in love with it. I'll come back and update if things change! If you don't hear from me, it's still up and working without me having to replace it yet!

This is an extremely useful attachment for my matrix drill, and I recommend it to everyone.

Thank you, great....

Excelente el servicio de Amazon!!!

Good for quick cuts on lumber for small projects.